CDS 2022 (1) (held on 10.04.2022)

Solved Question Paper - General Knowledge

1. If the magnification produced by a lens is +2, then the image is:

  1. erect, virtual and smaller than the object
  2. inverted, real and smaller than the object
  3. erect, virtual and larger than the object
  4. inverted, real and larger than the object

2. What is the correct sequence of resistivity of silver, nichrome and glass at room temperature?

  1. Silver < Nichrome < Glass
  2. Glass < Nichrome < Silver
  3. Silver < Glass < Nichrome
  4. Nichrome < Silver < Glass

3. At the time of short-circuit, the current in the circuit:

  1. reduces substantially
  2. does not change
  3. increases heavily
  4. keeps on fluctuating

4. Which one of the following statements is not correct?

  1. An electric motor converts electrical energy into mechanical energy
  2. An electric generator works on the priniciple of electromagnetic induction
  3. The magnetic field at the centre of a long circular coil carrying current will be parallel straight lines
  4. A wire with a green insulation is usually the live wire of an electric supply

5. A boy completes one round of a circular track of diameter 200 m in 30 s. What will be the displacement at the end of 3 minutes and 45 seconds?

  1. 50 m
  2. 100 m
  3. 200 m
  4. 236 m

6. What happens to the gravitational force between two objects if the mass of one object is doubled and the distance between them is also doubled/

  1. The force would remain the same
  2. The force would be doubled
  3. The force would be halved
  4. The force would increase by a factor of 4

7. The number of moles of oxygen gas used in complete combustion of 1 mole of glucose is:

  1. 1
  2. 3
  3. 6
  4. 12

8. Which one of the following is not an example of an oxidation reaction?

  1. The taste of butter changes if left for a longer period
  2. A white substance is formed when an aqueous solution of barium chloride is mixed with sodium sulphate solution
  3. A reddish-brown powder gets coated on articles made of iron
  4. Wine gets sour with time

9. Methanoic acid is normally found in:

  1. muscles
  2. urine
  3. ant stings
  4. human brain

10. What is the number of moles of 'He' in 104 g of helium gas?

  1. 52
  2. 26
  3. 13
  4. 6.5

11. While burning hydrocarbon fuels, if we see a yellow flame with lots of black smoke, it means that the fuel is:

  1. made of saturated hydrocarbons
  2. made of unsaturated hydrocarbons
  3. burning completely
  4. wet

12. The number of saturated and unsaturated bonds in cyclohexane are:

  1. 9 and 0 respectively
  2. 18 and 3 respectively
  3. 18 and 0 respectively
  4. 9 and 3 respectively

13. Which one of the following statements is true when non-metals are dissolved in water?

  1. They produce basic oxides
  2. They produce acidic oxides
  3. They produce neutral oxides
  4. They provide hydroxides

14. Which one of the following statements is not correct with regard to genetically modified organisms?

  1. In this technique a gene from one organism is isolated and transferred to the cell of another organism
  2. This technique has applications only in plants
  3. Genes for insect resistance may spread from crop plants to wild plants
  4. To produce a transgenic animal the novel genes are inserted at a very early stage of development

15. Suppose, due to an accident, the delicate lining of the mouth and oesophagus of a person is injured. In this case, which one of the following tissues will be affected?

  1. Smooth muscle
  2. Cuboidal epithelium
  3. Squamous epithelium
  4. Striated muscle

16. Which one of the following statements is correct about the cell membrane?

  1. It is made up of cellulose.
  2. It is a permeable structure for all substances.
  3. It is flexible and enables the cell to engulf many materials.
  4. It does not allow diffusion of gases liek oxygen and carbon dioxide.

17. Plants prepare glucose in the process of:

  1. respiration
  2. photosynthesis
  3. degradation
  4. mineral absorption

18. The disease rickets develops in children due to the deficiency of:

  1. Vitamin C
  2. Vitamin D
  3. Vitamin A
  4. Vitamin B

19. Match List I with List II and select the correct answer using the code given below the lists:

List I
(Blood Vessel)		List II
(Function)
A. Pulmonary artery1. Carries blood from lungs to heart
B. Capillaries2. Carries blood to heart muscle
C. Coronary artery3. Connection between arteries and veins
D. Pulmonary vein4. Carries blood from heart to lungs

Code:

  1. A - 4; B - 3; C - 2; D - 1
  2. A - 4; B - 2; C - 3; D - 1
  3. A - 1; B - 2; C - 3; D - 4
  4. A - 1; B - 3; C - 2; D - 4