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3rd April 2016, 01:37 PM
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Join Date: May 2012
Re: Physics for CDS exam

The questions which are generally asked in the Combined Defence Services Examination for physics Subject are as mentioned below:

Physics- Basic General Knowledge questions and answers asked in the Combined Defence Services Examination are as folows:

1. Which of the following measurements is not a unit of distance?

A. Ammeter
B. Cubit
C. Parsec
D. angstrom

2. Which one of the following remains constant while throwing a ball upward?

A. Displacement
B. Kinectic energy
C. Acceleration
D. Velocity

3. Pure water freezes at what temperature?

A. 47 F
B. 32 F
C. 0 F
D. 19 F

4. Which vitamin is abundant in citrus fruits?

A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin D

5. Zinc Oxide is

A. Acidic
B. Basic
C. Neutral
D. Amphoteric

6. Water is a _____________ Conductor of electricity.

A. super conductor
B. bad conductor
C. speed conductor
D. None of these

7. What element’s three isotopes have different names?

A. Helium
B. Oxygen
C. Carbon
D. Hydrogen


8. On which one of the following conservation laws, does a rocket work?

A. Mass
B. Energy
C. Linear momentum
D. Angular momentum

9. Which one among the following radiations carries maximum energy?

A. Ultraviolet rays
B. Gamma rays
C. X- rays
D. Infra red rays

10. The Central Arid Zone Research Institute (CAZRI) is located at

A. Jaipur
B. Jodhpur
C. Jaisalmer
D. Jallandhar

11. What is the main constituent of coal gas?

A. Oxygen
B. Water
C. Nitrogen
D. Methane

12. Recoil of a gun is an example of

A. Conservation of mass
B. conservation of energy
C. conservationofPE into KE
D. conservation of linear momentum

13. What is the heaviest of the naturally occuring Noble gases?

A. Radon
B. Xenon
C. Helium
D. Argon

14. Aviation fuel for Jet aeroplanes consists of purified

A. Petrol
B. Kerosene
C. Gasoline
D. Diesel

15. A piece of stone and or iron travelling through space that moves through the earth’s atmosphere is

A. Planet
B. Sun
C. Moon
D. Meteor


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