Search Previous Year Questions

The correct answer is "Translocation".

Key Points

• Translocation is the transport of substances within the plant from leaves to other tissues.
• While photosynthesis allows plants to manufacture carbohydrates (sugars) in their leaves, other organic and inorganic substances are also needed by nonphotosynthetic plant components.
• Because of this, nutrients are moved from sources (areas with a surplus of carbohydrates, typically mature leaves) to sinks (regions where the carbohydrate is needed).

Additional Information

• Roots, flowers, fruits, stems, and emerging leaves are a few significant sinks.
• As sources later, when they are roughly halfway developed, leaves are particularly fascinating because they are sinks while they are young.

Given:

Given code - LEMON

Here, the Rule number 3 is applied in the given code. i.e. If both the second and the fourth elements are vowels, the fourth element is to be coded as the code for the third element and vice-versa.

Hence, code for LEMON is “63879”.

Shortcut Trick

A quadratic equation with roots α and β is formed as: x² − (Sum of Roots)x + (Product of Roots) = 0.

Sum of roots = 3 + (−2) = 1.

Product of roots = 3 × (−2) = −6.

Plugging in the values: x² − (1)x + (−6) = 0 ⇒ x² − x − 6 = 0.

∴ The correct answer is x² − x − 6 = 0.

Alternate Method

Given: The roots of the required quadratic equation are 3 and −2.

Method: If x = 3 and x = −2 are the roots, then (x − 3) and (x + 2) must be the linear factors of the quadratic expression.

⇒ (x − 3)(x + 2) = 0

⇒ x(x + 2) − 3(x + 2) = 0

⇒ x² + 2x − 3x − 6 = 0

⇒ x² − x − 6 = 0

∴ The correct answer is x² − x − 6 = 0.

Additional Information

Standard Quadratic Form

The general form of a quadratic equation is ax² + bx + c = 0, where a, b, and c are constants and a ≠ 0.

Relationship between Coefficients and Roots

For the equation ax² + bx + c = 0, Sum of roots = −b/a and Product of roots = c/a.

Discriminant and Nature of Roots

The term D = b² − 4ac determines the nature of roots: if D > 0, roots are real and distinct; if D = 0, roots are real and equal; if D < 0, roots are imaginary.

Given: 

L E A P K X O Z A E Y W U D O A D S L Y R K E V U L

The logic follows here is as,

• Vowel \(\rightarrow\) Consonant \(\rightarrow\) Vowel

=> Y repeated = 2 times

=> D repeated = 2 times

=> K repeated = 2 times

=> L repeated = 3 times

Here, consonants are immediately preceded and immediately followed by a vowel, and consonant is repeated the most number of times in the series are 3, L respectively.

Hence, 'Option 4' is the correct answer.

The logic follows here is as,

Addition of digits of first number = second number

Hence, '12' is the correct answer.

The correct answer is 'D > B > E  > C > A'.

Key Points

• A modern periodic table arranges the elements in increasing order of their atomic numbers and groups atoms with similar properties in the same vertical column (Figure ).
• Each box represents an element and contains its atomic number, symbol, average atomic mass, and (sometimes) name.
• The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups.

Now here,

So  the order is,

Tellurium > Antimony > Bromine > Oxygen > Nitrogen.

The correct answer is 'Assam'.

Key Points

• Powa Mecca Hajo Assam :
• The Muslim place of pilgrimage in Hajo is Powa Mecca Mosque.
• The name of the mosque means one-quarter of Mecca, which is the holiest city for Muslims situated in Arab.
• It is said that by offering prayers in this mosque, devotees gain one-fourth of the good grace that they would have gotten in the real Mecca.
• On the top of Garurachal Hill, the Powa Mecca mosque stands.
• This is the tomb of the pioneer of the Muslim religion in this area, Pir Ghiyasuddin Auliya.
• In 1657 AD, Sujauddin Muhammad Shah built this mosque. At that time Shah Jahan was the ruling Mughal emperor of India.
• The mosque is situated on the hill over the banks of the Brahmaputra River and is only 24 kms away from Guwahati.

Additional Information

• Important Hills Station:
• ​Leh Ladakh – Land of the High Passes.
• Nainital, Uttarakhand – The Hill Station of Lakes.
• Manali, Himachal Pradesh – Valley of the Gods.
• Mussoorie, Uttarakhand – The Queen of the Hill Stations.
• Gulmarg, Jammu and Kashmir – Popular Hill Station and Skiing Destination.
• Darjeeling, West Bengal - Land of the Celestial Thunderbolt.

The correct answer '\((\ {2\over3} : and :1 ), : : \)'.

Key Points

• According to Ohm's Law, the potential drop (V) across a resistor is given by V = IR, where I is the current passing through the resistor and R is its resistance.
• For resistor A:
• V1 = I1 * R1 = I1 * 8 Ω
• For resistor B:
• V2 = I2 * R2 = I2 * 12 Ω
• Currents through resistors:
• In a series circuit, the current passing through each resistor is the same. Therefore, I1 = I2 = I.
• Battery voltage:
• The total voltage provided by the battery is equal to the sum of the potential drops across the resistors in a series circuit.
• V_total = V1 + V2
• 6 V = V1 + V2
• Now, we can use these equations to find the ratios (V1/V2) and (I1/I2):
• (V1/V2) = (I1 * 8 Ω) / (I2 * 12 Ω)
• (I1/I2) = I1 / I2 (since I1 = I2 = I)
• Let's substitute I2 with I1 in the first equation:
• (V1/V2) = (I1 * 8 Ω) / (I1 * 12 Ω)
• (V1/V2) = 8 Ω / 12 Ω
• (V1/V2) = 2/3
• (I1/I2) = I1 / I2 = 1 (since I1 = I2 = I)
• Therefore, (V1/V2) = 2/3 and (I1/I2) = 1.

The correct answer is 'Montane forests'.

Key Points

• Montane forests:
• Montane forests are found on mountain slopes. Montane Forest is a type of mountain ecosystem.
• It is influenced by the colder climate at moderate elevations.
• Dense forests are common in these areas.
• Rainfall and a temperate climate cause natural vegetation to change in the Mountain Forest.
• The forests found in the mountains are known as montane forests.
• Wet temperate forests are found between 1000 and 2000 metres in elevation.
• Temperate forests and grasslands give way to Alpine vegetation at high altitudes, generally more than 3,600 metres above sea level.
• Tibetan antelope, yak, spotted deer, wild sheep, snow leopard, squirrels, Kashmir stag, jackrabbit, Shaggy horned wild ibex, bear and rare red panda, sheep and goats with thick hair are common animals found in this forest.

Additional Information

• Mangrove Forests:
• ​A Mangrove is a small tree or shrub that grows along coastlines, taking root in salty sediments, often underwater.
• The word ‘mangrove’ may refer to the habitat as a whole or to the trees and shrubs in the mangrove swamp.
• Mangroves are flowering trees, belonging to the families Rhizophoraceae, Acanthaceae, Lythraceae, Combretaceae, and Arecaceae.
• The major mangroves in India are found at:
• Sundarban Groves.
• Mahanadi Mangroves.
• Krishna Godavari Mangroves.
• Cauvery Deltaic Mangroves.
• Krishan-Godavari Mangrove.
• Andaman- Nicobar Mangrove.
• Tropical Deciduous Forests:
• Tropical Deciduous Forests are one of the five types of natural vegetation found in India.
• Being a tropical country (a country that lies in the zone between the Tropic of Cancer and the Tropic of Capricorn), the tropical deciduous forest is the most widespread forest in India, around 65.6% of the total forest is covered in tropical deciduous forests.
• On the basis of the availability of precipitation, the tropical deciduous forests in India are classified into two types:
• moist deciduous forests
• dry deciduous forests.
• The trees and shrubs of the tropical deciduous forest in India shed their leaves during the dry season (mostly in autumn) in order to conserve water.
• In India, the tropical deciduous forests are found: Madhya Pradesh, Uttar Pradesh, Odisha, Chhattisgarh, Jharkhand, and, Some parts of Maharashtra.
• Thorn Forests:
• ​The trees are low (6 to 10 metres maximum) and widely scatteredly distributed. Acacias and Euphorbias are very prominent flora.
• Rajasthan, southwestern Punjab, western Haryana, Kachchh and neighbouring parts of Saurashtra.
• Here they degenerate into desert type in the Thar desert.
• Such forests also rised on the leeside of the Western Ghats and expand in large areas of Maharashtra, Karnataka, Telangana, Andhra Pradesh and Tamil Nadu.
• The important flora species are neem, babul, cactii, etc.

Given:

 6x+4 = 67

Concept used:

 If x^a = x^b

 Then a=b

Calculations:

 6x+4 = 67

 x+4 = 7

 x = 7 - 4

 x = 3

Thus the correct option is '3' .