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Science : Ch 03 – Metals and Non-metals

This test is designed based on NCERT Syllabus for Class 10 Topics : Metals and Non-metals

  • Each time random 15 questions will be displaced
  • So retake the quiz till you have mastered all the questions

1 / 15

Which of the subsequent oxide(s) of iron would be obtained on prolonged reaction of iron with steam?

2 / 15

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?

3 / 15

Electrical wires have a coating of an insulating material. The material, overall adopted is:

4 / 15

In the given reaction, Al2O3 + NaOH → …X… + H2O. What is element X?

5 / 15

Which of the following Metal have very low melting points?

6 / 15

What occurs when calcium is treated with water?

  1. It does not react with water.
  2. It reacts violently with water. I
  3. t reacts less violently with water.
  4. Bubbles of hydrogen gas formed stick to the surface of calcium.

7 / 15

2 ml each of conc. HCl, HNO3, and a mixture of conc. HCl and conc. 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. The metal could be:

  1. AI
  2. Au
  3. Cu
  4. Pt

8 / 15

Which metal can be displaced by copper from its salt solution?

9 / 15

Why do ionic compounds conduct electricity in molten state? Because

10 / 15

A Metal that exists in liquid state at room temperature

11 / 15

The Most malleable and ductile metal

12 / 15

Metal that is best conductor of electricity

13 / 15

Give the formula of the stable binary compounds that would be formed by the combination of following pair of elements: Al and Cl2

14 / 15

Name one metal that exist in liquid state at room temperature.

15 / 15

A non-metal X exists in two diferent forms Y and Z. Y is the hardest natural substance, whereas Z is a good conductor of electricity. Identify X, Y and Z.

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