Test-MCQ Class 10-NCERT -Science-Chapter 3-Test-3

1. Generally, non-metals are not lustrous. Which of the following nonmetal is lustrous?

2. Which one of the following four metals would be displaced from the solution of its salts by other three metals?

3. 2 mL each of concentrated HCl, HNO3 and a mixture of concentrated HCl and concentrated HNO3 in the ratio of 3 : 1 were taken in test
tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C respectively. The metal could be

4. An alloy is

5. An electrolytic cell consists of
(i) positively charged cathode
(ii) negatively charged anode
(iii) positively charged anode
(iv) negatively charged cathode

6. During electrolytic refining of zinc, it gets 

7. An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following

8. Alloys are homogeneous mixtures of a metal with a metal or nonmetal. Which among the following alloys contain non-metal as one
of its constituents?

9. Which among the following statements is incorrect for magnesium metal?

10. Which among the following alloys contain mercury as one of its constituents?

11. Reaction between X and Y, forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z?

12. The electronic configurations of three elements X, Y and Z are X — 2, 8; Y — 2, 8, 7 and Z — 2, 8, 2. Which of the following is correct?

13. Although metals form basic oxides, which of the following metals form an amphoteric oxide?

14. Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity?

15. Electrical wires have a coating of an insulting material. The material, generally used is. 

16. Which of the following non-metals is a liquid?

17. Which of the following can undergo a chemical reaction?

18. Which one of the following figures correctly describes the process of electrolytic refining?