Chemistry Mock Test series:7

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1. 
Chemical formula of common salt is-

2. 
Which of the following substances does not wet the walls of a glass vessel?

3. 
What occurs when a drop of glycerol is placed on crushed KMnO₄ spread on paper?

4. 
What type of electromagnetic wave is emitted from the nucleus of a naturally radioactive atom?

5. 
What is the chemical formula of marsh gas?

6. 
The burning of petrol in vehicles contributes to air pollution by releasing which harmful metal into the environment?

7. 
Which of the following methods can be used to confirm whether drinking water contains a gamma-emitting isotope?

8. 
What is the expected pH level of lemon juice?

9. 
How many electrons are present in a Na⁺ ion?

10. 
Molten NaCl is a good conductor of electricity because of-

11. 
Which pollutant is responsible for holes in the ozone layer?

12. 
What is the pH value of an alkaline solution?

13. 
Water is considered an excellent solvent due to the nature of its molecules being-

14. 
Which of the following fuels is commonly utilized in gas welding processes?

15. 
Taj Mahal is said to be suffering from 'Marble Cancer'. What is Marble Cancer?

16. 
Which gas is essential for protein synthesis?

17. 
Kerosene typically contains a mixture of hydrocarbons with carbon numbers ranging from-

18. 
How many amino acids are present in insulin?

19. 
What is responsible for the buffer action of blood?

20. 
What is the chemical nature of Freon used as a refrigerant?

21. 
What are the fundamental components of an atom?

22. 
What types of bonds are present in CuSO₄·5H₂O?

23. 
Chemical formula of washing soda is-

24. 
What law does an ideal gas obey?

25. 
Which nuclear particles are responsible for holding all nucleons together in the nucleus?

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