Chemistry Quiz 45 (19 MCQs)

Quiz Instructions:

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1. All _____ are made up of two or more atoms bonded together.

2. In a chemical reaction, activation energy increases the _____ of the reactants.

3. How many elements are in the following equation:HO2C

4. The most electropositive elements among the following is

5. The energy-transfer molecule formed in cell respiration is

6. Which of the following are the pre-existing nucleons that were produced after the explosion.

7. All cell membranes are made of

8. The charge of an electron is

9. What type of bond is formed when atoms share electrons?

10. =The National Chemical Laboratory is situated in

11. The ratio of how much product is produced compared to how much is expected, expressed as a percentage.

12. Which subatomic particle is neutral?

13. Balance the following equationDicarbon dihydride + Oxygen $\rightarrow$ Carbon dioxide + Water

14. The human body is made up of several chemical elements; the element present in the highest proportion (65 %) in the body is

15. Which of the following represents a chemical change?

16. A positively or negatively charged particle.

17. Soluble inorganic compounds whose ions conduct a current is solution are called

18. Under similar conditions of temperature and pressure equal volume of all gases contain equal number of molecules. This is

19. X 1023 atoms of lithium (Li) is equal to how many moles?