Search Previous Year Questions

The correct answer is Chhattisgarh.

Key Points

• Bailadila Iron ore mine is located in the state of Chhattisgarh.
• It is one of the largest iron ore mines in India and is operated by the National Mineral Development Corporation (NMDC).
• It is known for its high-grade iron ore reserves.
• The Bailadila range of hills is located in the Dantewada district of Chhattisgarh.
• The iron ore from Bailadila is exported to Japan and South Korea, apart from being supplied to domestic steel plants.

Additional Information

• Chhattisgarh is rich in minerals such as iron ore, coal, limestone, and bauxite.
• The state is known for its significant contribution to India's mineral production.
• NMDC (National Mineral Development Corporation) is a state-controlled mineral producer of the Government of India.
• It is involved in the exploration of a wide range of minerals including iron ore, copper, limestone, dolomite, and gypsum.
• NMDC is one of the leading mining companies in India.

In a clock, when it is 6, the bell tolls 6 times and takes 10 seconds.

• For 6 o'clock:
• There are 6 tolls, which creates exactly 5 intervals between them.
• Total time taken = 10 seconds.
• Time for 1 interval = 10 ÷ 2 = 5 sec
• For 12 o'clock:
• There are 12 tolls, which creates exactly 11 intervals between them.
• Time for 11 intervals = 11 × 2 = 22.

Thus, It takes 22 seconds for the clock to toll 12 times at 12 o'clock.

Hence, the correct answer is "Option 4".

The correct answer is Formic acid.

Key Points

• Formic acid is the chemical responsible for the painful sensation caused by ant stings.
• Formic acid is also known as methanoic acid.
• It is a naturally occurring substance, found not only in ant venom but also in the stings and bites of other insects.
• Formic acid is used by ants as a defense mechanism to protect themselves from predators.

Additional Information

• Formic acid is the simplest carboxylic acid.
• It is used industrially in leather production and as a preservative in livestock feed.
• In nature, formic acid is also found in the stings of bees and certain caterpillars.

Given:

Profit earned = 25%

Cost Price (CP) = Selling Price (SP)

Formula used:

SP = CP + Profit

Calculation:

Let's assume the Cost Price (CP) of 1 metre of cloth is ₹100.

Profit = 25% of CP

⇒ Profit = 25% of ₹100

⇒ Profit = ₹25

Selling Price (SP) = CP + Profit

⇒ SP = ₹100 + ₹25

⇒ SP = ₹125

Since the businessman sells the cloth at cost price (₹100), he is giving cloth worth ₹125 at a price of ₹100.

The actual length of cloth he gives for ₹100:

Let x be the actual length of cloth given in metres.

Therefore, cost of x metres of cloth at ₹125 per metre = ₹100

⇒ x × ₹125 = ₹100

⇒ x = \(\dfrac{100}{125}\)

⇒ x = 0.8 metres

Converting metres to centimetres:

1 metre = 100 cm

0.8 metres = 0.8 × 100 cm

⇒ 0.8 metres = 80 cm

∴ While selling 1 metre of cloth, he actually gives 80 cm of cloth.

In first and fourth dice,

 

Logic: If two dice have the same face value in the given image then their clockwise or anticlockwise wise number are known as opposite numbers in dice.

In the first dice and fourth dice. The number 6 is common.

The left numbers will be opposite each other writing them clockwise starting from 1.

Here, we can see that the number opposite of '6' is '1'.

Hence, the correct answer is "1".

Given:

Total amount = ₹9,195

After deductions:

Let the amounts received by A, B, and C be A, B, and C respectively.

After deducting ₹45 from A, ₹60 from B, and ₹90 from C, the new amounts are in the ratio 2 : 3 : 4.

Calculation:

Let the amounts after deductions be 2x, 3x, and 4x for A, B, and C respectively.

Total amount after deductions = 2x + 3x + 4x = 9x

A - 45 = 2x

B - 60 = 3x

C - 90 = 4x

Total amount before deductions:

A + B + C = 9,195

Substitute the values of A, B, and C from the equations:

(2x + 45) + (3x + 60) + (4x + 90) = 9,195

⇒ 2x + 3x + 4x + 45 + 60 + 90 = 9,195

⇒ 9x + 195 = 9,195

⇒ 9x = 9,000

⇒ x = 9,00099,00099,0009

⇒ x = 1,000

Amount received by B before deduction:

B = 3x + 60

⇒ B = 3 × 1,000 + 60

⇒ B = 3,000 + 60

⇒ B = 3,060

∴ The amount received by B is ₹3,060.

The logic followed here is:

Logic: The number of letters between subsequent B's is increasing by 1.

Hence, the correct answer is "G".

Given:

A, B, and C are three ferry ghats located on the same bank of a river with B located at the midpoint between A and C.

Current flows from C to A.

Time taken to return to A from A, touching B = 6 hrs and 20 mins = 6 1/3 hrs = 19/3 hrs

Time taken to reach C from A = 8 hrs

Formula used:

Let the distance between A and B be d and between B and C be d (since B is the midpoint).

Total distance between A and C = 2d

Let the speed of the boat in still water be b and the speed of the current be c.

Using the formula:

Time = Distance / Speed

Calculation:

Time taken to go from A to C:

8 = 2d / (b - c)

⇒ 2d = 8(b - c)

⇒ d = 4(b - c)

Time taken to return to A, touching B:

19/3 = d / (b + c) + d / (b - c)

Substitute d = 4(b - c):

19/3 = 4(b - c) / (b + c) + 4(b - c) / (b - c)

⇒ 19/3 = 4(b - c) / (b + c) + 4

⇒ 19/3 = 4(b - c) / (b + c) + 4

⇒ 19/3 - 4 = 4(b - c) / (b + c)

⇒ 19/3 - 12/3 = 4(b - c) / (b + c)

⇒ 7/3 = 4(b - c) / (b + c)

⇒ 7(b + c) = 12(b - c)

⇒ 7b + 7c = 12b - 12c

⇒ 7c + 12c = 12b - 7b

⇒ 19c = 5b

⇒ c = 5b / 19

Time taken to come to A from C:

Time = Distance / Speed

Time = 2d / (b + c)

Substitute d = 4(b - c) and c = 5b / 19:

Time = 2 × 4(b - 5b/19) / (b + 5b/19)

Time = 8(14b/19) / (24b/19)

⇒ Time = 8 × 14b / 24b

⇒ Time = 8 × 14 / 24

⇒ Time = 112 / 24

⇒ Time = 14/3

⇒ Time = 4(2/3) hrs

⇒ Time = 4 hr 40 min

∴ The time it would take to come to A from C is 4 hours and 40 minutes.

The correct answer is Cytokinin.

Key Points

• Cytokinin is a plant hormone that is synthesized in the ripened seed of a plant.
• Cytokinins are a class of plant growth substances (phytohormones) that promote cell division, or cytokinesis, in plant roots and shoots. 
• They are primarily involved in cell growth and differentiation, but also affect apical dominance, axillary bud growth, and leaf senescence.
• Cytokinins are found in high concentrations in areas of active growth such as seeds, fruits, and young leaves.
• They are produced in the roots and travel upwards through the xylem.

Additional Information

• Other phytohormones include:
• Auxin: Promotes root initiation and is involved in phototropism and gravitropism.
• Gibberellin: Promotes stem elongation, seed germination, and flowering.
• Ethylene: Influences fruit ripening and leaf abscission.
• Abscisic Acid (ABA): Involved in seed dormancy and stress responses.

According to the given information,

The English alphabets in reverse order:

Here, we can see that the letter which is fifth letter to the left of the ninth letter from the right is N.

Hence, the correct answer is "N".