CDS Exam (II)- 2024 - General Knowledge Defence Question Paper

CDS Previous Year Question Papers Question Papers
CDS Exam (II)- 2024 - General Knowledge

CDS Exam (II)- 2024 - General Knowledge Defence Questions

11.
In which of the following colloids is the dispersing medium a liquid?
A.
Mist
B.
Smoke
C.
Jelly
D.
Shaving cream
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ANSWER :
D. Shaving cream
12.
The two isotopes of elemental chlorine are:
A.
\( {}^{36}_{17}Cl \) and \( {}^{37}_{18}Cl \)
B.
\( {}^{34}_{17}Cl \) and \( {}^{36}_{18}Cl \)
C.
\( {}^{35}_{17}Cl \) and \( {}^{37}_{18}Cl \)
D.
\( {}^{35}_{17}Cl \) and \( {}^{37}_{17}Cl \)
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ANSWER :
D. \( {}^{35}_{17}Cl \) and \( {}^{37}_{17}Cl \)
13.
Which one among the following metals is not stored under oil?
A.
Sodium
B.
Rubidium
C.
Potassium
D.
Lithium
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ANSWER :
D. Lithium
14.
Potassium nitrate is not used:
A.
as a fertiliser
B.
in medicine
C.
in making gunpowder
D.
as a preservative of meat products
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ANSWER :
B. in medicine
15.
The surface of the concrete structure of a new construction is covered with straw/gunny bags by wetting. This is done to:
A.
prevent fast evaporation, until hydration has proceeded well.
B.
protect the concrete structure from contamination by dust particles.
C.
prevent development of any fungus on the surface.
D.
give smoother and cleaner surface over cement structure.
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ANSWER :
A. prevent fast evaporation, until hydration has proceeded well.
16.
Which one among the following statements for the gases mentioned below is not correct?
A.
Hydrogen has 3 isotopes.
B.
Helium is a commonly used gas in electric bulbs.
C.
Oxygen is used to burn fuel in rocket engines in spacecraft.
D.
Nitrogen can be used in gaseous form to replace air in food packaging.
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ANSWER :
B. Helium is a commonly used gas in electric bulbs.
17.

Match List-I with List-II and select the correct answer using the code given below the Lists:

List-I (Trade Name) List-II (Chemical Name)
A. Bleaching powder 1. Sodium bicarbonate
B. Baking soda 2. Sodium carbonate, 10 water
C. Washing soda 3. Calcium oxychloride
D. Plaster of Paris 4. Calcium sulphate, \( \dfrac{1}{2} \) water

Code: A B C D

A.

3 1 2 4

B.

3 2 1 4

C.

4 2 1 3

D.

4 1 2 3

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ANSWER :

A. 3 1 2 4

18.
Which one among the following statements is not true for glass?
A.
Sodium silicate is known as water glass.
B.
Glass is also called super cooled liquid.
C.
Crystallinity develops on cooling of the molten mass of the glass.
D.
Coloured glasses can be made by adding different colouring materials.
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ANSWER :
C. Crystallinity develops on cooling of the molten mass of the glass.
19.
Which one among the following is responsible for determining the chemical properties of an element?
A.
Protons
B.
Electrons
C.
Neutrons
D.
Nucleus
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ANSWER :
B. Electrons
20.
Which one among the following is used in bleaching of paper?
A.
Chlorine
B.
Chlorobenzene
C.
Ammonium chloride
D.
Hydrochloric acid
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ANSWER :
A. Chlorine
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