NTSE MCQs 1 on "Metals and Non-metals"

These are NTSE MCQs 1 of "Metals and Non-metals" . Practice MCQs to check your knowledge for Entrance examination like NTSE etc.

1. An example of a metal which is a liquid at room temperature

• Zinc
• Copper
• Mercury
• Bromine

2. Gold is used in making ornaments because it is:

• Lusturous
• Unreactive
• Malleable
• All of the above

3. You are given two statements a and b, select the correct inference from this:
a. Metals conduct heat.
b. Diamond is the best conductor of heat.

• Hence diamond is a metal
• Statement a is correct
• Statements a and b is correct
• None of the above

4. A list of metals arranged in the order of their decreasing activities is known as:

• Periodic table
• Reactivity series
• Newland’s law of octaves
• All of these

5. Sodium is kept immersed in kerosene oil because:

• It reacts with moisture in the air
• Immersing in kerosene cuts off the supply of air
• The reaction of sodium with air is very violent.
• All of the above.

6. Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows a. Which is the least reactive metal?

Metal	Iron(II) sulphate	Copper(II) sulphate	Zinc Sulphate	Silver nitrate
A	No Reaction	Displacement
B	Displacement		No reaction
C	No reaction	No reaction	No reaction	Displacement
D	No reaction	No reaction	No reaction

• A
• B
• C
• D

7. In the above table arrange the metals A, B, C and D in increasing order of reactivity:

• D < A < C < B
• D < C < B < A
• D < C < A < B
• C < D < A < B

8. What are the ions present in Na₂O?

• Na⁺, O^-
• Na²⁺, O^2-
• Na²⁺, O^2-
• Na⁺, O^2-

9. Among the following select the metal found free in nature:

• Au
• Cu
• Na
• Mg

10. Ores mined from the earth are usually comtaminated with large amounts of impurities such as soil, sand, etc called_____________.

• Gravel
• Gangue
• Sand
• Granite