Class 10 Science Metals And Non-metals? CBSE Questions & Answers

Class 10 · Science Metals And Non-metals?

This is Science class 10 Science Metals and Non-metals? CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

Match the following with correct response. (1) Liquid metal (2) Best conductor of heat (3) Poorest conductor of heat (4) Metal can be cut with life (A) Silver (B) Sodium (C) Lead (D) Mercury

A
1-D, 2-A, 3-C, 4-B
Correct
B
1-A, 2-C, 3-B, 4-D
C
1-B, 2-D, 3-A, 4-C
D
1-C, 2-B, 3-D, 4-A

Match the following with correct response. (1) Calcination (2) Roasting (3) Smelting (4) Thermite reaction (A) Reduction by carbon (B) Absence of air (C) Exothermic (D) Excess of air

A
1-B, 2-D, 3-A, 4-C
Correct
B
1-A, 2-C, 3-B, 4-D
C
1-D, 2-A, 3-C, 4-B
D
1-C, 2-B, 3-D, 4-A

Match the following with correct response. (1) Bauxite (2) Hematite (3) Galena (4) Argentite (A) Sodium (B) Iron (C) Aluminium (D) Lead

A
1-A, 2-C, 3-B, 4-D
B
1-D, 2-A, 3-C, 4-B
C
1-C, 2-B, 3-D, 4-A
Correct
D
1-B, 2-D, 3-A, 4-C

Match the following with correct response. (1) Enrichment of ore (2) Extraction of metals (3) Conversion of oxides form to the metallic form (4) Refining of metals (A) Froth floatation process (B) Reduction by carbon (C) Roasting (D) Electrolysis

A
1-A, 2-C, 3-B, 4-D
Correct
B
1-D, 2-A, 3-C, 4-B
C
1-B, 2-D, 3-A, 4-C
D
1-C, 2-B, 3-D, 4-A

Match the following with correct response. (1) Bronze (2) Stainless steel (3) Solder (4) Duralumin (A) Iron (B) Aluminium (C) Tin and lead (D) Copper

A
1-C, 2-B, 3-D, 4-A
B
1-D, 2-A, 3-C, 4-B
Correct
C
1-A, 2-C, 3-B, 4-D
D
1-B, 2-D, 3-A, 4-C

Match the following with correct response. (1) Most reactive (2) Least reactive (3) Metal less reactive than hydrogen (4) Non metal (A) Copper (B) Potassium (C) Bromine (D) Gold

A
1-D, 2-A, 3-C, 4-B
B
1-B, 2-D, 3-A, 4-C
Correct
C
1-C, 2-B, 3-D, 4-A
D
1-A, 2-C, 3-B, 4-D

Match the following with correct response. (1) Magnetic separation (2) Froth floatation (3) Leaching (4) Gravity method (A) Difference in density (B) Sulphide ore (C) Iron ore (D) Aluminium ore

A
1-C, 2-B, 3-D, 4-A
Correct
B
1-D, 2-A, 3-C, 4-B
C
1-B, 2-D, 3-A, 4-C
D
1-A, 2-C, 3-B, 4-D

Match the following with correct response. (1) Electrolytic reduction (2) Electrolytic refining (3) Reduction with carbon (4) Reduction with aluminium(A) Sodium (B) Zinc (C) Impure copper (D) Chromium

A
1-C, 2-B, 3-D, 4-A
B
1-D, 2-A, 3-C, 4-B
C
1-B, 2-D, 3-A, 4-C
D
1-A, 2-C, 3-B, 4-D
Correct

Match the following with correct response. (1) Metal (2) Non-metal (3) Amphoteric (4) Salts (A) Basic oxides (B) Neutral (C) Both acidic and Basic (D) acidic oxides

A
1-B, 2-D, 3-A, 4-C
B
1-D, 2-A, 3-C, 4-B
Correct
C
1-A, 2-C, 3-B, 4-D
D
1-C, 2-B, 3-D, 4-A

What happen when magnesium is treated with water?A. It does not react with water B. It reacts violently with water C. It reacts less violently with water D. Bubbles of hydrogen gas formed stick to the surface of calcium

A
C and D
Correct
B
A, B and D
C
B and C
D
All of these

Which of the following metals are obtained by electrolysis of their chlorides in molten state A. Na B. Ca C. FeD. Cu

A
B and C
B
A and C
C
A and B
Correct
D
All of these

Which of the following property is generally shown by metals?A. Electrical conduction B. Sonorous in nature C. DullnessD. Ductility

A
A and B
B
All of these
C
A and C
D
A, B and D
Correct

Which of the following has electrovalent bond?A. CaF B. NaCl C. MgOD. \({\text{C}}{{\text{O}}_{\text{2}}}\)

A
A and C
B
A, B and C
Correct
C
All of these
D
C and D

Metals are alloyed to-A. Decrease hardness B. Lower melting pointC. Decrease resistance towards corrosion D. Increase tensile strength

A
A and C
B
All of these
C
B and D
Correct
D
A and D

Which oxide will turn blue litmus solution to red?A. \(S{O_2}\)B. \(MgO\)C. \(N{a_2}O\)D. \(N{O_2}\)

A
A and D
Correct
B
B and C
C
All of these
D
A and C