NDA/NA SOLVED PAPER 2016-I (GENERAL KNOWLEDGE)

Total Questions: 100

31. Which one of the following is the chemical name for baking soda?

Correct Answer: (a) Sodium bicarbonate (Sodium hydrogen carbonate)
Solution:Sodium bicarbonate is a chemical compound with the formula NaHCO3.

32. Which of the following statements about DNA is/are correct?

1. DNA is the hereditary material of all living organisms.
2. All segments of DNA code for synthesis of proteins.
3. Nuclear DNA is double helical with two nucleotide chains which run anti-parallel.
4. DNA is also found in mitochondria.

Select the correct answer using the code given below:

Correct Answer: (b) 3 and 4 only
Solution:Not all viruses have DNA e.g. HIV virus. It is double helical structure with two nucleotide chain which runs anti-parallel. DNA is also present in mitochondria. Only some segments of DNA code for proteins.

33. Which organisation prepares the topographical maps of India?

Correct Answer: (c) Survery of India
Solution:Survey of India is India's central engineering agency which prepares topographical maps.

34. Which one of the following is not an international boundary line?

Correct Answer: (a) Dresden Line
Solution:Dresden line

35. A lady is standing in front of a plane mirror at a distance of 1 m from it. She walks 60 cm towards the mirror. The distance of her image now from herself (ignoring the thickness of the mirror) is

Correct Answer: (c) 80 cm
Solution:In plane mirror, distance of object from mirror = distance of image from mirror.
So the distance between mirror and object = 40+40 = 80 cm.

36. The brightness of a star depends on its

Correct Answer: (d) size, temperature and distance from the earth
Solution:The brightness of a star depends on its composition i.e. size and temperature (energy light radiation e.g. X-ray, etc.) and how far it is from the planet.

37. When a solid is heated, it turns directly into a gas. This process is called

Correct Answer: (c) Sublimation
Solution:Sublimation is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.

38. Which one of the following is water gas?

Correct Answer: (a) Mixture of carbon monoxide and hydrogen
Solution:A fuel gas consisting mainly of carbon monoxide and hydrogen, made by passing steam over incandescent coke.

39. Which of the following statements are correct?

In honey bees
1. Males are haploid.
2. Workers are sterile and diploid.
3. Queen develops from diploid larvae that fed on royal jelly.
4. Honey is collected/made by males.

Select the correct answer using the code given below:

Correct Answer: (c) 1, 2 and 3 only
Solution:The queen is the only fertile female in the colony.

40. The Amarkantak Hills is the source of which of the following rivers?

1. Narmada
2. Mahanadi
3. Tapti
4. Son

Select the correct answer using the code given below:

Correct Answer: (d) 1, 2 and 4 only
Solution:River Narmada emerges from Amarkantak Hill of Maikal Range. The mighty Narmada river as well the Son, the Mahanadi, and Arnadoh which is a major tributary of the Godavari all arise in the Amarkantak plateau. Son river is largest of southern tributaries of Ganga that originates near Amarkantak in Madhya Pradesh near the source of Narmada River.