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NDA GK Previous Papers Chapterwise MCQs - Basic Chemistry
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NDA GK Previous Papers Chapterwise MCQs - Basic Chemistry
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25 Questions

1. Consider the following statements with regard to the properties of water
I. Water is a good solvent for ionic compound but poor solvent for covalent compound.
II. Water is a good solvent for covalent compound but poor solvent for ionic compound. III. Water has maximum density at the temperature 277 K. Which of the statements given above are correct?
2. The equivalent weight of oxalic acid in C2H2O4.2H2O is
3. Which among the following is a chemical change?
4. The alkali metals have relatively low melting point. Which one of the following alkali metals is expected to have the highest melting point?
5. Which one among the following is the major constituent of soda lime glass?
6. Which one among the following most correctly determines the atomic number of an element?
7. Which one of the following correctly defines the state of glass?
8. Which one of the following alkali metals has lowest melting point?
9. What is the composition of nitrolim – a chemical fertilizer ?
10. Which one of the following is not contained in Portland cement ?
11. Which of the following is correct regarding the reaction of fluorine with water? 2F2(g) + 2H2O(l) → 4H+ (aq) + 4F– (aq) + O2(g)
12. The Poisonous nature of Carbon monoxide (CO) is due to its
13. The nucleus of a singly ionized carbon atom contains
14. Which of the following pairs is/are correctly matched?
1. Isotopes : Atoms with same atomic number but different atomic mass
2. Isobars : Atoms with same number of neutrons but different atomic number
3. Isotones : Atoms with same mass number but different atomic number Select the correct answer using the code given below :Code :
15. Consider the following statements: Nitrogen is an essential constituent of ]Q1. soils 2. animals
3. plants Which of the statements given above is/are correct ?
16. Which one of the following metals is used in the filaments of photo-electric cells that convert light energy into electric energy?
17. Which gas is responsible for the swelling of bread ?
18. Flint glass is obtained from which of the following ?
19. A bee-sting leaves an acid which causes pain and irritation. The injected acid is
20. What is the term used to denote the critical temperature at which the air becomes saturated with vapour and below which the condensation is likely to begin ?
21. Which one of the following metals does NOT react with cold water ?
22. Which one of the following elements is used in pencil-lead?
23. Which one of the following elements forms highest number of compounds?
24. The very high heat of vaporization of water is mainly a result of
25. Which one among the following is used as a moderator in nuclear reactors?

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