SSC CHSL Previous Paper 9 (Held On: 7 March 2018 Shift 1) (Previous Year Paper)

The correct answer is 'Option 3 i.e. Obsessive'.

Key Points

• Obsessive (जुनूनी) - Preoccupied with a particular thought, idea, or object.
• Example: The obsessive collector had hundreds of rare stamps.

Therefore, the correct answer is - Option 3

Additional Information

• Option 1: obsesive - Incorrect spelling
• Option 2: obsessiv - Incorrect spelling
• Option 4: obsesiv - Incorrect spelling

The first sentence in the sequence should tell us ''the introduction of what?'' This is only given in sentence C. So it is the first sentence. It should be followed by B and A respectively. No other sequence can be logical or grammatically correct. So option 3 is correct.    

The sentence is absolutely correct. There is no improvement required. So option 4 is correct. 

We cab't use 'cleaned' or 'cleans' without helping verbs in this sentence. The sentence is such that even if we used helping verbs it wouldn't make sense with these two words. The correct form is 'cleaning.' Using +ing verb here doesn't mean that the action is taking place. It implies that ''it will be painful to clean cooking vessels with carbon deposits.'' So option 3 is correct. 

The correct answer is Truculent

Key Points

• Meaning of the options given:
• Truculent: Eager or quick to argue or fight; aggressively defiant
  

Example: die-hard fans who became truculent and violent after their team's loss

• Docile: ready to accept control or instruction; submissive.
  

Example: a docile young pony that went wherever it was led

• Pliable: easily bent; flexible.
  

Example: the wooden strips become more pliable if they are first soaked in water

• Pliant: easily influenced or directed; yielding. 
  

Example: a pliant branch bent low with the weight of ripe fruit.

• ​Thus, the correct answer is 'Truculent'.

The correct answer is Vanguard

Key Points

• Meaning of the words given in the options are:
• Vanguard: A group of people leading the way in new developments or ideas.
  

Example: a style of jazz that the vanguard quickly recognized as new and exciting.

• Sycophant: a person who acts obsequiously towards someone important in order to gain advantage.
  

Example: Be careful not to mistake sycophants for true friends.

• Stooge: a subordinate used by another to do unpleasant routine work.
  

Example: The newly appointed mayor is widely regarded as a government stooge.

• Zealot: a person who is fanatical and uncompromising in pursuit of their religious, political, or other ideals.
  

Example: a religious zealot

• ​Thus, the correct answer is 'Vanguard'.

The correct answer is Physically awkward, especially with respect to the hands.

Key Points

• All thumbs: very awkward and clumsy, especially with one's hands.
  

Example: Mary is all thumbs when it comes to gardening.

• Synonyms: awkward, butterfingered, cack-handed, clumsy, graceless, ham-fisted, left-handed, maladroit, unhandy

The correct answer is Unable to leave somewhere because of a problem.

Key Points

• Be left stranded- Being "left stranded" typically means being left in a difficult situation without assistance or support, often unable to proceed with one's plans.
• Example: He left me stranded in town with no car and no money for a bus.
• Thus, out of all given options option 1 is correct and therefore the answer.

The correct word here is ''your.'' The others will male the sentence meaningless. So option 1 is correct.

The correct word is ''not.'' No other options can be logical. 

So option 4 is correct.

The correct word here is 'as.' It is used to mean 'used to indicate that something happens during the time when something else is taking place or.'' So option 4 is correct. So option 4 is correct.

The word built is correct. Build, builds and building are present tense or continuous tense. We know that cameras were invented long ago. So option 2 i correct.

The correct word is 'closest.' When we use the definite article 'the' it means that there is nothing else like it. 'Closest' is the superlative degree, which means that there nothing close than this. So option 2 is the correct answer.

The correct answer is Liaison

Key Points

• Liaison is the correct spelling. It means ''communication or cooperation which facilitates a close working relationship between people or organizations.''
• For example: the strong liaison between the parents and teachers is based on the fact that both have the students' best interests at heart.
• Synonyms: affiliation, alliance, association, collaboration, confederation, connection, cooperation, hookup, linkup, partnership, relation, relationship, tie-up, union

The correct is option 2) i.e. Tina requested him to wait there till she returned.

Explanation:

• We make changes in tenses of reported speech only when the reporting verb is in the past tense.
• When the reported speech is an Imperative sentence, we follow these steps-
• Reporting verb 'said to' is changed into 'requested'; as 'please' is given in 'Reported Speech'
• connector 'that' is used in place of commas.
• Tense of reported speech will be changed from Present to past Tense (in above sentence- 'return' changes into 'returned')
• personal Pronouns of reported speech are changed as per subject and object of reporting verb. Here, the first person- 'I' will change into 'She' as per Subject - 'Tina'.

Indirect speech:

• By following these steps we get the final sentence:  ​*" Tina requested him to wait there till she returned*.."​

Mistake Point:

• We may think that 'wait' is a Verb here, so it should be changed into 'waited'
• Always do remember if the 'Reporting verb' is in 'Past Tense' the 'Tense' of 'Indirect speech' will be changed.

The correct answer is The kite was caught by the girl.

Key Points

• In Active Voice, a sentence emphasizes the subject, performing an action.
• In Passive Voice, a sentence emphasizes the action or the object of the sentence.
• The given sentence is in the active voice and 'The girl' is the subject and 'the kite' is the object.
• When we convert this sentence into passive voice, the subject 'The girl' becomes the object, the object 'the kite' becomes the subject.
• The active format "V2 (caught)" should be converted into the passive format "was + V3 "
• This is the active and passive voice rule for the past simple tense.
  

Hence, the correct answer is option 1.

Additional Information

• Verbs of passive format have a different set of tenses (*V3 - Past participle or Third form of the Verb) as given below in the table:
  

The correct sequence is ''RQP.'' Here the sentence wants to convey 'how an effective presentation can be delivered.'' It can be conveyed only by the sequence RQP. So option 3 is correct.

Relationship means ''association.'' So the opposite word must be ''opposition'' which means 'resistance or dissent, expressed in action or argument.' 

So option 4 is correct.

All the other words more or less denote 'relationship'.

Sordid means ''involving immoral or dishonourable actions and motives; arousing moral distaste and contempt.'' So the opposite word is definitely ''reputable'' which means 'having a good reputation.' So option 4 is correct. 

Dirty, Black and corrupt are all synonyms if the given word.

Quiescent means ''in a state or period of inactivity or dormancy.'' Dull is the perfect synonym for this which means ''lacking interest or excitement.''

So option 1 is correct. 

Questionable: doubtful

Bright: intelligent and quick-witted. 

Alive: alert and active; animated.

The correct answer is Agitation

Key Points

• Meaning of the words given:
• Turbulence: a state of violence, confusion, and disorder
  

Example: There was much turbulence in their town after a string of tragedies.

• Agitation: an uneasy state of mind usually over the possibility of an anticipated misfortune or trouble
  

Example: experienced a great deal of agitation over whether she had an appropriate dress for her husband's inauguration

• Calmness: a state of freedom from storm or disturbance
  

Example: Despite the calmness of his voice, I could tell he was angry.

• Repose: a state of freedom from storm or disturbance
  

Example: enjoyed the repose of a serene summer evening

• Stillness: a state of freedom from storm or disturbance
• So option 1 is correct. All the other words are exactly opposite to this meaning.

The correct word here is ''rampant.'' It means ''unchecked and widespread.'' So option 3 is correct. 

• reluctant: unwilling and hesitant; disinclined.
• distant: far away in space or time.
• extravagant: lacking restraint in spending money or using resources.

The correct answer is  'The'

Key Points

• The worst is the Superlative degree.
• There is nothing more than a Superlative degree. So we must use the definite article ''the'' before worst.
• Hence, A and An are not the correct answer.
• Thus, the complete sentence is: The worst is yet to come.

Additional Information

• We do not need to add the definite article if the noun is possessive: 
  

Example: 

• That’s his best
• He’s my most diligent
• ​The is not used with superlatives in predicative position, when we compare the same person or thing in different situations.
  

Example: He is nicest in the evenings after he has had a few drinks. (NOT He is the nicest in the evenings …)

The correct answer is 3

Key Points

• If a subject and the verb are joined by a relative pronoun, the verb used will agree with the antecedent to the relative pronoun.
  

Example: She is one of the noblest women that has ever lived on the earth. (wrong)

                 She is one of the noblest women that have ever lived on the earth. (right)

• Cause is singular therefore the verb must also be singular. Therefore we must use 'has' instead of 'have.' So option 3 is the correct answer.

Thus, the correct answer is: Every effect we see, hear or speak in our outside or physical world has a specific cause that has its origin in the inner or mental world.

The correct answer is 3

Key Points

• 'the sun' should be there in place of 'sun'
• The definite article (the) is used in front of nouns that are only one in nature like sun, moon, earth, etc.
• Example: 
  

the North pole, the South pole, the earth, the world, the universe, the sun, the moon, the sky, the air, the weather, the wind, the rain, the sea, the planet

• Thus, the correct sentence is: Photosynthesis is possible because of the sun.

A rectangle has four sides.

Similarly,

A triangle has three sides.

Hence, the correct answer is ‘Triangle: Three’.

The pattern followed here is,

Logic: First number + 4 = Second number

13 + 4 = 17

Similarly,

19 + 4 = 23

Hence, the correct answer is " 23".

The pattern followed here is,

EFG : GHI →

Checking all options

1) RFH : THJ → Pattern followed

2) NPS : OQT → Pattern doesn't followed

3) LAN : JYL → Pattern doesn't followed

4) TOP : QLM  → Pattern doesn't followed

Hence, the correct answer is "RFH : THJ".

Here parameters and their respective S.I units are given.

But in option 3, the S.I. unit and its parameter are given. (order is changed)

Hence, the correct answer is "Ampere – Current".

The pattern followed here is,

(12 - 1)² = (11)² = 121

(14 - 1)² = (13)² = 169

(16 - 1)² = (15)² = 225 ≠ 215

(18 - 1)² = (17)² = 289

Hence, 16 – 215 is the odd one out.

The pattern followed here is,

1. HFD →

2. SQO →

3. ZXV →

5. BZU →

Hence, the correct answer is ‘BZU’.

As per the dictionary order,

4. Biology

5. Blizzard

6. Boastful

7. Brides

8. Brilliant

Hence, the correct answer is "43215".

The pattern followed here is,

Hence,the correct answer is "37".

The table shows the place value of the alphabet from A to Z and Z to A.

The pattern followed here is:

Hence, the correct answer is "S".

1. In a row, there are 8 girls between Aruna and Bimla. Aruna is the first girl in a row.

2. There are 5 girls between Bimla and Chetna.

3. There are 14 girls after Chetna.

Adding sentences 1,2, and 3 we get

So, Aruna + 2 + Chetna + 14 = 18 girls.

Hence, the correct answer is "18".

we need the minimum number of girls in the row and for that, we need to place Chetna on the left of Bimla.

1. Pire: PRECIOUS → word can be formed.

2. Rise: PRECIOUS → word can be formed.

3. Rose: PRECIOUS → word can be formed.

4. Rest: ‘T’ is not present in PRECIOUS, hence word cannot be formed.

Hence, the correct answer is "Rest".

The pattern followed here is:

RINKS → SKOMT

Similarly,

FRIED → GTJGE

Hence,the correct answer is "GTJGE".

As per the given information,

Given: 5 ÷ 4 ­- 10 + 7 × 16

Changing symbols as per the given information

We get,

= 5 x 4 ÷ 10 - 7 + 16

Using the BODMAS rule,

= 5 x 4 ÷ 10 - 7 + 16

= 5 x 0.4 - 7 + 16

= 2 - 7 + 16

= 11

Hence, the correct answer is "11".

Changing symbols as per the given options,

Given Equation:18 × 12 - 3 ÷ 10 + 2

1. By changing signs + and × we get

LHS = 18 + 12 - 3 ÷ 10 × 2

= 18 + 12 - 0.3 × 2

= 30 - 0.6

→ 30 - 0.6 ≠ RHS

2) By changing signs + and ÷ we get

LHS = 18 × 12 - 3 + 10 ÷ 2

= 18 × 12 - 3 + 5

= 216  - 3 + 5

→  216  - 3 + 5 ≠ RHS

3) By changing signs ÷ and ­- we get

LHS = 18 × 12 ÷ 3 - 10 + 2

= 18 × 4 - 10 + 2

= 72 - 10 + 2

= 74 - 10 

→ 64 = RHS

4) By changing signs - and + we get

LHS = 18 × 12 + 3 ÷ 10 - 2

= 18 × 12 + 0.3 - 2

= 216  + 0.3 - 2

→ 216.3 - 2 ≠ RHS

Hence, the correct answer is "÷ and ­-".

The pattern followed here is,

# → +

9 # 3 = 9 + 3 = 12; 12 × 10 = 120;

3 # 4 = 3 + 4 = 7; 7 × 10 = 70;

2 # 9 = 2 + 9 = 11; 11 × 10 = 110;

Similarly,

5 # 2 = 5 + 2 = 7; 7 × 10 = 70

Hence, the correct answer is "70".

The pattern followed here is,

Hence,the correct answer is ‘QQQQQQP'.

As per the given information,

Hence, the correct answer is "15 km West".

The least possible diagram of this question is as follows,

Conclusion I: No bangles are gold → Follows (In diagram shows there is no relation between Bangles and gold)

Conclusion II: Some rings are gold → Follows (In diagram shows all gold are rings means some rings are gold)

Hence, the correct answer is "Both conclusions I and II follow".

Rectangle represents Dentists

Circle represents Bloggers

Triangle represents Comedian

Square represents Boxers

Set of letters represents Dentists who are either Bloggers or Comedians are L and C.

Hence, the correct answer is "LC".

The pattern followed here is,

Hence,the correct answer is ‘GTZ’.

The pattern followed here is,         

Hence, the correct answer is "52".

Alternate Method The pattern followed here is:

The pattern followed here is,

Logic: First number + 2 = Second number

Second number + 2 = Third number

1. (10, 12, 14) = 10 + 2 = 12; 12 + 2 = 14

2. (12, 14, 16) = 12 + 2 = 14; 14 + 2 = 16

3. (18, 20, 22) = 18 + 2 = 20; 20 + 2 = 22

4) (24, 26, 30) = 24 + 2 = 26; 26 + 4 = 30

Hence, the correct answer is "(24, 26, 30)".

If a mirror is placed along the MN line, then, we will get the following mirror image.

Hence the correct answer is "Option 3".

Additional Information

• The mirror always forms the laterally inverted images, i.e. left changes to right and vice versa.
• The reflection of an object in the water is called its water image.
• The water image of an object in the water is always vertically inverted, i.e. Upside changes to down and vice versa.
• The water image is the mirror image in case if the mirror is placed horizontally below the object.

As per the given information, the possible cube formation is shown below,

Hence, the correct answer is "Option 4".

Checking each option as per the table given in the question, we get

1. 44, 85, 21, 65 → D, S, C, V

2. 44, 98, 40, 75 → D, R, L, U

3. 10, 97, 31, 67 → F, Y, B, P

4. 23, 56, 11, 79 → A, X, E, S

Hence, the correct answer is '23, 56, 11, 79'

Concept used :

Vulgar fraction: A fraction that can be written in the form of a/b, where a and b are integers. For example - $\frac{2}{21}, \frac{1}{2} , \frac{4}{9}$ etc.

Calculations:

0.0068 

⇒ 68/10000

⇒ 17/2500

Hence, The correct answer is "17/2500".

Concept used:

Divisibility rule of 4:

If the last two - digit of a number is divisible by 4, then the given no. will be divisible by 4.

Calculation:

3 digit numbers which are divisible by 4 are 100, 104, 108, …… 996

Let there be n terms in this series and the n^th term is 996

So, n^th term = a + (n – 1)d

Where, a = 100 and d = 4

⇒ 996 = 100 + (n – 1) × 4

⇒ 896 = (n – 1) × 4

⇒ n – 1 = 896/4 = 224

⇒ n = 225

Thus, there are 225 3-digit numbers which are completely divisible by 4.

Hence, the correct answer is, "225".

Alternate MethodTotal numbers = 1000 - 100 = 900

The total numbers divisible by 4 = 900/4 = 225

∴ The 225 are the 3-digit numbers which are completely divisible by 4.

Given:

Capacity of smaller bucket = 3/5 × of larger bucket

No. of larger bucket needed to fill a pond = 6,000

Calculation:

Let Small bucket is S and Large bucket is L.

S = 3/5 × L

⇒ S : L = 3 : 5

Efficiency of Large bucket = 5 units

Efficiency of Small bucket = 3 units

Capacity of pond = Efficiency of large bucket × No. of buckets needed

⇒ 5 × 6000 = 30000 units

∴ No. of small capacity buckets needed to fill pond = 30000/3 = 10000

Calculation:

Putting  a = 2 in the given eq, we get

${a^3} - 5 + \frac{{128}}{{16a}} = {2^3} - 5 + \frac{{128}}{{16 \times 2}} = 8-5 + 4 = 7$

Given:

Height of equilateral triangle = 9 cm

Formula used:

If ΔABC is an equilateral triangle, then

Circumradius = side/√3

Height of an equilateral triangle = (√3/2)a

where a → side of the triangle

Calculation:

⇒ (√3)/2 × a = 9 cm

$⇒ {\rm{;a;}} = \frac{{18}}{{\surd 3}}cm$

∴ Radius of the circle circumscribing the three vertices of an equilateral triangle

⇒  $\frac{a}{{\surd 3}} = \frac{{\frac{{18}}{{\surd 3}};}}{{\surd 3}} = \frac{{18}}{3} = 6$

Shortcut TrickThe amount will be divisible by 11 as the the formula of the perimeter.

Only 9504 among the given options is divisible by 11.

∴ The required cost is Rs. 9504.

Traditional method:

Area of ground = 24.64 hectares = 24.64 × 10000 = 246400 m²

⇒ πr² = 246400

⇒ 22/7 × r² = 246400

⇒ r² = 78400

⇒ r = 280 m

Cost of making rope boundary = Circumference of the ground × rate of making boundary

∴ Cost of making rope boundary = 2πr × 5.40 = 2 × 22/7 × 280 × 5.4 = Rs. 9504

Calculation:

90% of X = 40% of Y

⇒ 9/10 × X = 2/5 × Y

⇒ Y/X = 9/4

And, Y = a% of X

⇒ Y/X = a/100

⇒ 9/4 = a/100

∴ a = 900/4 = 225

Given:

The sum of three numbers = 162

Ratio of 1st to 2nd no. = 5 : 7

Ratio of 2nd to 3rd no. = 5 : 3

Calculation:

Let three numbers are a, b and c

⇒ a : b = 5 : 7 = 25 : 35

⇒ b : c = 5 : 3 = 35 : 21

⇒ a : b : c = 25 : 35 : 21

a + b + c = 162

⇒ 25k + 35k + 21k = 162

⇒ 81k = 162

⇒ k = 2

∴ b = 35k = 35 × 2 = 70

Alternate Methoda ∶ b ∶ c

⇒ 5 ∶ 7 ∶ 7

    5 ∶ 5 ∶ 3× 

= 25 ∶ 35 ∶ 21

(25 + 35 + 21) units = 162

⇒ 81 units = 162

⇒ 1 unit = 2

Second number = 2 × 35

⇒ 70

∴ The required number is 70.

Given:

Investment of S, T and U = Rs.4200, Rs.6300 and Rs.8400 respectively

Time of S = 3 Months

Time of T = 6 months

Time of U = 12 months

Total Profit = Rs.6000

Concept used:

Profit = Investment × Time

Calculation:

Ratio of profit

⇒ Ratio of S’s capital × time : Ratio of T’s capital × time : Ratio of U’s capital × time

⇒ 4200 × 3 : 6300 × 6 : 8400 × 12

⇒ 1 : 3 : 8

∴ U’s share = 8/(1 + 3 + 8) × 6000 = 8/12 × 6000 = 4000

Given:

Average = 15/2

Calculation:

Let 6 consecutive integers are a, (a + 1), (a + 2), (a + 3), (a + 4), (a + 5).

⇒ 7.5 = (a + (a + 1) + (a + 2) + (a + 3) + (a + 4) + (a + 5)) /6

⇒ a + (a + 1) + (a + 2) + (a + 3) + (a + 4) + (a + 5) = 45

⇒ 6a + 15 = 45

⇒ a = 5

∴ Average of last three no. = ((a + 3) + (a + 4) + (a + 5))/3 = ((5 + 3) + (5 + 4) + (5 + 5))/3 = 27/3 = 9

Shortcut TrickIf the integers are consecutive and the number of integers is even.

The middle number of two consecutive number = 7.5 = (8 + 7)/2

∴ The required numbers are 5,6,7,8,9,10

The last three integers are 8, 9 and 10. We know that the number of integers are odd, the middle integers will be the average of the numbers.

∴ The required average is 9.

Given:

Interest = Rs. 65.5

Rate of interest = 5%

Time = 6 months

Calculation:

S.I. = (P × R × T) /100

⇒ 65.5 = (P × 5 × 0.5) /100

⇒ P = 65500/25

∴ P = 2620

Alternate Method5% for 6 months = 65.5

⇒ 5% for 1 year = 131

⇒ 1% = 131/5 = 26.2

⇒ 100% = Principal = Rs. 2620

∴ The principal is Rs. 2620.

Given

S.P – C.P = Rs. 221

Profit% = 17%

Formula used:

Profit % = (S.P – C.P)/C.P × 100

Calculation:

⇒ 17 = 221/C.P × 100

⇒ C.P = 22100/17 = Rs. 1300

So, S.P = C.P + 17% of C.P = 1300 × 117/100 = Rs. 1521

Shortcut Trick

Profit = S.P. – C.P. = 221 ≡ 17%

⇒ 1% = 221/17 = 13

∴ S.P. = 117% = 117 × 13 = 1521

Given:

MP = Rs. 3600

SP = Rs. 3132

Formula used:

Discount % = (M.P. – S.P.) /(M.P.) × 100

Calculation:

 (3600 – 3132)/3600 × 100

∴ Discount % = 468/3600 × 100 = 13%

Alternate MethodThe difference = 3600 - 3132 = 468

⇒ Discount% = (468/3600) × 100 = 13%

Formula used:

(a + b)² = a² + b² + 2ab

Calculation:

684 × 686 = 684 × (684 + 2) = 684² + 2 × 684

To make it perfect square we should add 1

⇒ 684² + 2 × 684 × 1 + 1² = (684 + 1)²

So answer is 1.

Given:

Time taken by Sumit to complete the work = 5 days

Time taken by Amit to complete the word = 4 days

Calculation:

Let Total work = Lcm of 5 and 4 = 20 units

Efficiency of Sumit = 20/5 = 4 units/day

Efficiency of Amit = 20/4 = 5 units/day

Efficiency of Sumit and Amit together = 4 + 5 = 9 units/day

So, the money will be divided according to their efficiency.

Share of Amit = (4/9) × 7200 = 3200 Rs

Share of Amit = (5/9) × 7200 = 4000 Rs

∴ Difference of their salary = 4000 - 3200 = Rs. 800

Alternate MethodRatio of amount received will be reciprocal to the ratio of time required to complete the work.

The ratio of amount received = 1/5 ∶ 1/4

⇒ 4 ∶ 5

Total amount = (4 + 5) units = 7200

⇒ 1 unit = 7200/9 = Rs. 800

⇒ The difference in the salary = 1 unit = Rs. 800

The difference in the salary is Rs. 800

Given:

Distance cover by the man with 50 km/hr by running 

Same distance return back with 5 km/hr by walking

Whole journey time = 5 hours 30 minutes

Formula used:

Time = Distance/Speed

Calculation:

Let the distance cover by train or walking be D

Total time = 5 hours 30 minutes = 11/2 hours 

⇒ time taken by train + time taken by waking = 11/2

⇒ D/50 + D/5 = 11/2

⇒ (D + 10D) /50 = 11/2

⇒ 11D/50 = 11/2

⇒ D = 25 km

∴ The distance cover by train is 25 km

Alternate MethodTotal distance = (X × Y)/(X + Y) [Total time]

Where X and Y are the speed for going and returning.

The distance = (50 × 5)/(50 + 5) × 11/2

⇒ 250/55 × 11/2

⇒ 25 km.

∴ The distance cover by train is 25 km

Calculation:

As shown in the pie chart, the value of Raw materials and Logistics is 350 which is 2nd highest.

But in option we don’t have logistics, so answer = Raw Material

Calculation:

Total expenditure = Expenditure on (Raw Material + Labour + Power + Rent + Logistics + Maintenance + Taxes)

∴ Total expenditure = 350 + 450 + 200 + 50 + 350 + 250 + 150 = 1800

The central angle of the sector representing Taxes is = 150/1800 × 360 = 30°

Calculation:

Total expenditure = Expenditure on (Raw Material + Labour + Power + Rent + Logistics + Maintenance + Taxes)

Total expenditure = 350 + 450 + 200 + 50 + 350 + 250 + 150 = 1800

Expenditure on Labour and Raw Material = 450 + 350 = 800

∴ Required % = 800/1800 × 100 = 44.44%

Given:

The length of the diagonal = 25cm

The breadth of the rectangle = 7cm

Formula used:

Perimeter of the rectangle = 2(l + b)

D² = l² + b²

where D → Diagonal

l → length of the rectangle

b → breadth of the rectangle

Calculation:

D = 25 cm, b = 7 cm and l = ?

⇒ D² = l² + b²

⇒ 25² = l² + 7²

⇒ l² = 625 - 49

⇒ l² = 576

⇒ l = 24

∴ Perimeter of rectangle = 2(24 + 7) = 62 cm

Given:

Sides of a regular polygon = 6

Formula used:

Each interior angle of a polygon with 'n' sides = {180^∘ × (n - 2)}/n

Exterior angle = (360°)/n

Calculation:

Interior angle of a regular polygon

⇒ {180° × (6 - 2)}/6 = 30 × 4 =  120°

Exterior angle = (360°)/n = (360°)/6 = 60°

∴ Required Difference = 120° - 60° = 60°

Given:

Curved surface area of cone = 99 cm²

Slant height of the cone = 9 cm

Formula used:

Curved surface area of cone = πrl

where r → radius of the cone

l → slant height of the cone

Calculation:

⇒ πrl = 99

⇒ 22/7 × r × 9 = 99

⇒ r = 3.5 cm

∴ Diameter = 2 × 3.5 = 7 cm

Concept used:

Calculation:

1/3 - cot 60° = 1/3 - 1/√3 = (1 - √3)/3

tan X = 15/8 = YZ/XY

⇒ (XZ)² = (YZ)² + (XY)²

⇒ (XZ)² = (15)² + (8)² = 225 + 64 = 289

⇒ XZ = 17

∴ sin Z = XY/XZ = 8/17

The correct answer is There are no restrictions on exports and imports

Key Points

• Free trade:-
• It is a policy that is made between two nations or even more.
• In free trade areas, there are no import tariffs or quotas on products.
• This policy permits the unlimited and unrestricted import or export of goods and services between those partner nations.

The correct answer is Commercial Irrigation Projects.

Key Points

• Non-Tax revenue is the income earned by the government from sources apart from taxes.
• It can be increased by improving the working of Commercial Irrigation Projects.

The correct answer is Krishna Deva Raya.

Key Points

• Krishna Deva Rayi:-
• Krishna Deva Raya was from the Tuluva dynasty of the Vijaynagar Empire and became ruler from 1509-1530.
• He is considered to be the greatest ruler of the Vijaynagar Empire.
• He gave permission to the Portuguese to erect a fort at Bhatkal.
• He abolished the marriage tax but he imposed a tax on widow remarriage.
• He was the friend of the Portuguese Governor Albuquerque, who sent an agent to offer help to Krishna Deva in his fight with the Bahamanis in return for his support against the Zamorin of Calicut.
• Krishna Deva did not immediately accept the offer, however, the second Portuguese ambassador succeeded in convincing him.

Additional Information

• Devaraya II:-
• ​He is also known as Proudha Devaraya.
• He had the title of Gajabetekaara as he was good at the art of Elephant Hunting.
• Persian Ambassador Abdur Razzak visited his court in 1443.
• He describes that there is no king more powerful than him in the whole of Hindusthan.
• He had led a naval expedition against Ceylon and collected rich tributes from them. Hence statement 1 is Correct.
• He wrote a Sanskrit work Mahanataka Sudhanidhi on stagecraft.
• Venkat II:-
• ​Venkatapati Raya was the younger brother of Sriranga Deva Raya and the ruler of Vijayanagara Empire with bases in Penukonda, Chandragiri and Vellore.
• His reign of three decades saw a revival of the strength and prosperity of the empire. He allowed the Portuguese to build a church in his empire.
• Narsingh Raya:-​
• The Tuluva dynasty was founded by Vir Narsingh.

The correct answer is Gore

Key Points

• Gore:-
• A sector between the two longitude lines is known as Gore. It is a curved surface that lies between 2 close lines of longitude on a globe.

Additional Information

• Belt:-
• ​It is a geographic region that is usually bandlike and is distinctive in a specific respect.
• Time box:-
• ​It is a fixed time period for each planned activity.

The correct answer is Andaman and Nicobar Islands

Key Points

• Black Water:-
• ​The Cellular Jail, a colonial prison of Andaman and Nicobar Islands in India was also known as Kala Pani or Black Water before independence.
• The prison was mainly used by the Britishers to keep away political prisoners in the remote islands.

The correct answer is Kathak dance.

Key Points

• Sitara Devi:-
• She was an eminent Indian Kathak dancer.
• She is a recipient of Padma Shri, Sangeet Natak Akademi Award, Nritya Nipun, and Kalidas Samman.
• Sitara Devi is a well-known classical Kathak dancer of India, born at the day of the great Indian festival Diwali in Kolkata in 1920.
• As she was born on Dipawali, she has also named as Dhanalakshmi (nickname of which is Dhanno). She belongs to the Brahmin family of Varanasi.
• Her father, Sukhdev Maharaj, was also a Kathak performer and teacher.
• Her mother, Matsya Kumari, belongs to the Royal family of Nepal.
• Kathak was the source of income as well as the fervour of her family. Her father had passed all his talent (Kathak, Bharatanatyashastra, Sanskrit) to his children (daughters are Alaknanda, Tara, Dhano and sons are Chaube, Pande). She was depicted as the Nritya Samragini by Rabindranath Tagore when she was just 16.
• Rabindranath Tagore encouraged her to revitalize the Indian arts through the Kathak.
• Still, She is known as the Kathak queen of India.
• Kathak
• They were originally a cast of storytellers in north India (Utter Pradesh) who used to sing gestures and songs in temples.
• This word is derived from Katha (Sanskrit Word).
• This dance was spread in India during the Bhakti Movement in the 16th-17th centuries.
• Other Famous Kathak dancers – Birju Maharaj, Lachu Maharaj, Sambu Maharaj, Shovna Narayan.

The 11^th edition of the bilateral naval exercise conducted by Indian and Omar Navy near Muscat in 2017 was Naseem Al Bahr, which means ‘sea breeze’. This exercise is a biennial feature since 1993.

The correct answer is Akshay Kumar.

Key Points

• Akshay Kumar won the best actor award for his film Rustom, while the best actress award was won by Surabhi Lakshmi for her Malayalam film Minnaminungu.
• The National Film Awards is an award ceremony conducted every year during which the Directorate of Film Festivals honours the best films of Indian cinema for that year.
• The 64^th National Film Awards was held on May 3, 2017.

Important Points

• The National Film Awards is the most prominent film award ceremony in India.
• National Film Awards established in 1954, it has been administered, along with the International Film Festival of India and the Indian Panorama, by the Indian government's Directorate of Film Festivals since 1973.
• The National Film Awards are presented in two main categories:
• ​Feature Films and Non-Feature Films.
• The Awards are categorized into three sections:
• Feature Films, Non-Feature Films, and Best Writing on Cinema.

The correct answer is The length to width ratio of the rectangle is 4 : 3

Key Points

• Bangladesh’s Flag:-
• ​The national flag of Bangladesh consists of a red circle in the middle with a bottle green background.
• The length-to-width ratio of the rectangle is 3 : 5.
• The middle circle has a radius of one-fifth of the length.
• The flag was adopted officially on 17 January 1972.
• Artist Quamrul Hassan designed the Bangladesh National Flag.

Additional Information

• The capital of Bangladesh is Dhaka.
• The currency of Bangladesh is ‘The Bangladeshi taka’.

The correct answer is Diatomic.

Explanation:

• The oxygen molecule is diatomic.
• Diatomic molecules are those molecules which are composed of only 2 atoms, of either same or different chemical elements.
• Hydrogen (H₂) and oxygen (O₂) are examples of diatomic molecules.

The correct answer is Only I and III.

Explanation:

 ACIDS : 

• When these compounds are dissolved in water, they produce hydrogen ions (H⁺ ions).
• An acid is classified chemically as a substance that dissolves and donates protons or hydrogen ions to a solution.
• Acids have a sour taste for example - lemon juice and vinegar.
• Acids in aqueous solutions are electrolytes, which means they conduct an electrical current.
• The pH range of acids is less than 7.
• Response with indicators -
• LITMUS PAPER 
• Turns blue litmus to red
• Red litmus ramins red​

BASES: 

• Bases, on the other hand, have a bitter taste and are slick to the touch. The term "alkali" refers to a base that can be dissolved in water. Salts are formed when these compounds react chemically with acids. It's common for bases to turn red and litmus blue.
• When these compounds are dissolved in water, they produce hydroxide ions (OH^- ions).
• This means, bases don't have hydrogen ions to dissociate but they have an atom of hydrogen (H) associated with the oxygen to form and hydroxide ion(this OH-  dissociateS in water).

The correct answer is Comptroller and Auditor General of India

Key Points

• Comptroller and Auditor General of India:-
• The Comptroller and Auditor General (CAG) of India is the head of the Indian Audit and Accounts Department.
• CAG controls the entire financial system of the country at both state and central levels and is the supreme body for audits and accounts in India.
• He/ She is appointed by the President of India.
• He/ She holds the office for six years or up to the age of 65.
• CAG has the same status as the judge of the Supreme court
• It is also known as ‘the guardian of the public purse’.
• Articles related to the Comptroller and Auditor General of India:-

Additional Information

• Prime Minister of India:-
• The prime minister is appointed by the president of India; however, the prime minister has to enjoy the confidence of the majority of Lok Sabha members, who are directly elected every five years, lest the prime minister shall resign.
• A member of either the Lok Sabha or the Rajya Sabha can be appointed as the Prime Minister.
• Other Ministers shall be appointed by the President on the advice of the Prime Minister.
• Chief Justice of India:-​
• CJI is the highest-ranking officer of the Indian federal judiciary.
• The Chief Justice of India and the Judges of the Supreme Court are appointed by the President under clause (2) of Article 124 of the Constitution.
• Appointment to the office of the Chief Justice of India should be of the seniormost Judge of the Supreme Court considered fit to hold the office.
• The Union Minister of Law at the appropriate time, seeks the recommendation of the outgoing Chief Justice of India for the appointment of the next Chief Justice of India

The correct answer is All I, II and III.

Key Points

• All India Service
• All appointments to All India Civil Services are made by the President of India.
• The All India Services comprises the Civil Services of India, namely the Indian Administrative Service (IAS), the Indian Police Service (IPS), and the Indian Forest Service (IFS).
• he members of these services are recruited by the Union government, but their services are placed under various State cadres, and they have the liability to serve both under the State and under the Centre.

Additional Information Tenure of Office:

• According to Article 310, members of the defence services, the civil services of the Centre and the all-India services or persons holding military posts or civil posts under the Centre, hold office during the pleasure of the president.
• Similarly, members of the civil services of a state or persons holding civil posts under a state, hold office during the pleasure of the governor of the state.

Safeguards to Civil Servants:

• Article 311 places two restrictions on the above ‘doctrine of pleasure’.
• In other words, it provides two safeguards to civil servants against any arbitrary dismissal from their posts.
• A civil servant cannot be dismissed or removed by an authority subordinate to that by which he was appointed.

The correct answer is Food.

Explanation:

Food is the main source of energy and materials for human beings. Important nutrients derived from food include carbohydrates, proteins, fats, lipids, amino acids, and more.

The correct answer is touch.

Explanation:

• The somatosensory system is one of the parts of the sensory nervous system.
• The sensory receptors are found all over the body including, bones, joints, muscles, skin, internal organs, epithelial tissues, and the cardiovascular system.
• The somatosensory receptors in human beings detect touch and temperature.
• Gustatory and olfactory receptors are the sensory receptors that are related to the sense of taste and sense of smell.
• Gustatory receptors
• It is present on the tongue are spread evenly across the taste buds.
• Their main function is to provide a sense of taste.
• Olfactory receptors
• It is present on the surface of the olfactory neurons.
• Their main function is to sense smell.
• These receptors equip sperm cells for finding the egg through a sense of smell.

The correct answer is Platform.

Key Points

• To make a child labour-free society, the PENCIL portal was launched in September 2017 in India by Union Minister Rajnath Singh.
• PENCIL stands for Platform for Effective Enforcement for No Child Labour.
• This portal will combat the menace of sexual abuse, child labour, and trafficking in India.

The correct answer is Bharat Biotech.

Key Points

• Bharat Biotech has developed Typbar Typhoid Conjugate vaccine that has received pre-qualification from the World Health Organisation (WHO) for global use.
• Bharat Biotech, a vaccine company, in December 2017, received a Pre-Qualification tag from the World Health Organisation (WHO) for Typbar TCV or Typhoid Conjugate Vaccine.
• The WHO tag would allow the firm to access global public vaccination programmes.
• Typbar TCV is the first typhoid vaccine, clinically proven to be administered to children from six months of age to adults, and confers long-term protection against typhoid fever.

Important PointsWorld Health Organization (WHO)

• The World Health Organization was established on April 7, 1948.
• The headquarters of the World Health Organisation (WHO) is located in Geneva, Switzerland.
• Tedros Adhanon is the Director-General of the World Health Organization.
• Therefore April 7 is observed as World Health Day every year.
• The World Health Assembly and the Executive Board are the governing bodies of WHO.
• WHO gets funding from its member nations which can be either compulsory or Voluntary.
• The countries which are members of UNO are the members of WHO also.

The correct answer is 1.7.

Key Points

• Income Tax Department:-
• It functions under the Department of Revenue of the Ministry of Finance.
• It is responsible for the following:-
• To formulate progressive tax policies.
• To make compliance easy To enforce tax laws with fairness.
• To deliver quality services.
• To continuously upgrade skills and build a professional and motivated workforce.
• Its headquarter is in New Delhi.
• ​As per the data released by the Income Tax Department in December 2017, only 1.7 percent of the total population, i.e. over 2 crore people paid income tax in the assessment year 2015-16.

On 20 July 2017, Lok Sabha passed IIIT PPP Bill, 2017. The Bill seeks to allow 15 IIITs established on a PPP model to grant degrees. PPP stands for Public Private Partnership.

The correct answer is 4.8.

Key Points

• CONCEPT:
• Resistance: The property of any conductor that opposes the flow of electric current through it and depends on the shape and size of the materials, temperature, and nature of the materials is called resistance.
• It is denoted by R and the SI unit is the ohm (Ω).

The resistance is given by:

• R = ρL/A
• where ρ is resistivity, L is the length and A is the area of the cross-section.

CALCULATION:

• Given that:
• Length (L) = 8 m
• The cross-sectional area (A) = 2 cm2 = 2 × 10-4 m2
• The Resistivity (ρ) = 120 Ω m
• We know that,
• Resistance (R) = Resistivity (ρ) × (Length(L)/Cross-sectional area (A))
• Now,
• R = [120 × (8/0.0002)] = 4.8 × 106 Ω  = 4.8 × 106 × 10-6 mega Ω
• R = 4.8 mega Ω. So option 2 is correct.

The correct answer is speed.

Key Points

• The distance-time graph represents the distance covered by the particle in time 't'.
• The slope of the curve in the distance-time graph represents the instantaneous velocity.
• Instantaneous velocity is defined as the rate of change of position for a time interval which is very small (almost zero).
• It is measured using the SI unit m/s.
• The slope of the curve is measured in the anticlockwise direction from the positive x-axis. it is denoted by tanθ.

​

Additional Information

• Acceleration
• Acceleration is defined as the rate of change of velocity with respect to time.
• Acceleration is a vector quantity as it has both magnitude and direction.
• It is also the second derivative of position with respect to time or it is the first derivative of velocity with respect to time.
• Instantaneous acceleration is defined as the ratio of change in velocity during a given time interval such that the time interval goes to zero.
• The acceleration formula is given as:
• Momentum
• It is defined as the quantity of motion of the body.
• It is measured by mass × velocity.
• Momentum depends on both speed and direction
• Momentum is a vector quantity as mass is scaler and velocity is vector
• Momentum = Mass X Velocity (p=mv).
• SI unit Kg-ms-1.​
• Mass
• Mass is a property of a physical body. It is generally the amount of matter of an object.
• Since it only has magnitude and no direction, it is a scalar quantity.

The correct answer is is heated.

Key Points

• Air expands when it is heated. This happens because the particles of air move away from each other when they are warm and occupy more space.
• This makes the air lighter in weight and less dense.

In 2017, Wes Morgan captained the Premier League team Leicester City.

In 2017, Romelu Lukaku played for the Premier League team Manchester United.

France hosted the Tennis 2017 Davis Cup Final.

The correct answer is Tabs.

Key Points

• Microsoft Word:-
• Microsoft word is recognised as a word processing software, meaning a user can rewrite, erase or modify a document as per the requirement.
• The documents created in MS Word are very high in quality. MS Word is used for creating reports, stories, letters, resumes etc.
• It allows users to edit or modify the new or existing document with colour or any other formats like bold, italic and underline.
• In MS Word, the users can write the stories in paragraph format.
• The file extension used in Ms Word is .doc or .docx.
• Tabs setting allows us to align the text at a particular point, or to create a tabular layout.