(Antonyms) Part – A : English (NDA/NA SOLVED PAPER 2024 – I) (101 to 150)

Total Questions: 50

1. Which one among the following compounds has a sweet and fruity smell?

Correct Answer: (c) Ethyl acetate
Solution:

2. What is the coordination number of Na⁺ and Cl⁻ ions in NaCl lattice?

Correct Answer: (c) 6, 6
Solution:Coordination number of cation and Anion in Nacl lattice is 6,6.

3. Which one among the following is present in the nettle leaf hairs that causes burning pain ?

Correct Answer: (a) Methanoic acid
Solution:Methanoic acid, also called formic acid is present in the nettle leaves.

4. Which one among the following is known as Milk of Magnesia?

Correct Answer: (d) Magnesium hydroxide
Solution:Magnesium hydroxide is a chemical compound with the formula Mg (OH)₂, commonly known as milk of

5. Soap with water forms:

Correct Answer: (d) Lyotropic liquid crystal
Solution:A mixture of soap with water forms Lyotropic liquid crystal.

6. Which among the following is the correct composition of Borax ?

Correct Answer: (b) Sodium, Boron, Oxygen and Hydrogen
Solution:Borax with the chemical formula Na₂ H₂₀ B₄ O₁₇ (also written as Na₂ H₂₀ B₄ O₁₇. H₂₀)

7. Which one among the following oxides has the highest melting point?

Correct Answer: (b) MgO
Solution:MgO has the highest melting point due to the strong ionic bonding between Mg2⁺ and O2⁻

8. Which of the following statements regarding neap tides is/are correct?

1. It occurs every 14-15 days, which coincides with the first and third quarter of the Moon.

2. This tide has a small tidal range because the gravitational forces of the Moon and the Sun are in quadrature.

Select the answer using the code given below:

Correct Answer: (c) Both 1 and 2
Solution:(c)

9. Which of the following statements regarding earthquakes is/are correct?

1. The point on the Earth's surface directly above the focus is called the epicentre of the earthquake.

2. Earthquakes generate Primary and Secondary waves that radiate outward from the earthquake focus.

3. Deep-focus earthquakes are likely to cause more damage than shallow-focus earthquakes.

Select the answer using the code given below:

Correct Answer: (b) 1 and 2 only
Solution:(b)

10. Which of the following statements regarding air temperature is/are correct?

1. Air temperature is measured at a standard height of 1.2 m (4.0 feet) above the ground surface.

2. The average rate of temperature decrease with height is termed as the environmental temperature lapse rate.

Select the answer using the code given below:

Correct Answer: (c) Both 1 and 2
Solution:
  • Environmental temperature lapse rate is the rate at which the temperature of air decreases with altitude over a specific time and place. It's also known as the standard lapse rate. The lapse rate is positive when the temperature decreases with height, and negative when it increases. The standard rate is estimated to be 6.5 degrees Celsius per kilometer or 1000 meters.
  • According to IMO Air temperature should be measured at a standard height of 1-2 meters (4-6 feet) above the ground surface. This is done to minimize the influence of local factors like ground heating or shading from buildings.