SSC CGL Science – Metals, Non-Metals & Metallurgy – Level 1 · Warm-up · Tier I Level

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SSC CGL Science – Metals, Non-Metals & Metallurgy – Level 1 · Warm-up · Tier I Level – 12 questions, subject: General Science. Every question has the correct answer with a one-line explanation; tap "Show Answer". Free practice for TNPSC, UPSC, SSC, Bank and RRB exams – Shanmugam IAS Academy, Coimbatore.

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1.  
Which metal is soft enough to be cut with a knife?

Correct Answer: D [Sodium]

Explanation:

Sodium (like potassium and lithium) is soft and can be cut with a knife; iron, copper and aluminium are hard.

2.  
The most malleable and ductile metal is:

Correct Answer: C [Gold]

Explanation:

Gold can be beaten into the thinnest sheets and drawn into the finest wires; silver is close behind.

3.  
The best conductor of electricity among these is:

Correct Answer: A [Silver]

Explanation:

Silver is the best conductor; copper comes next and is cheaper.

4.  
Cassiterite is an ore of:

Correct Answer: B [tin]

Explanation:

Cassiterite (tin stone) is SnO₂.

5.  
Brass is an alloy of:

Correct Answer: D [copper and zinc]

Explanation:

Answer: copper and zinc. BraZZ – zinc.

6.  
Sodium metal is stored under:

Correct Answer: C [kerosene]

Explanation:

Sodium reacts with air and moisture and can catch fire.

7.  
Galvanisation is coating iron with:

Correct Answer: A [zinc]

Explanation:

Answer: zinc. Galvanising = zinc coating.

8.  
Which of these non-metals is lustrous?

Correct Answer: B [Iodine]

Explanation:

Answer: Iodine. Iodine has a metallic lustre.

9.  
The chemical formula of haematite is:

Correct Answer: A [Fe₂O₃]

Explanation:

Haematite Fe₂O₃; magnetite Fe₃O₄; siderite FeCO₃; pyrites FeS₂.

10.  
Pure gold is:

Correct Answer: B [24 carat]

Explanation:

The carat scale has 24 parts; 24 carat = pure.

11.  
Fill in the blankThe earthy impurities present in an ore are called ___.

Correct Answer: C [gangue]

Explanation:

Gangue is removed during concentration; flux turns it into slag.

12.  
Diagram-basedIn which beakers will a displacement reaction take place?

Correct Answer: D [P and R]

Explanation:

Zn and Fe are above Cu and displace it; Cu cannot displace Zn; Ag cannot displace Cu.

➤ Full notes, shortcuts and every answer explained – SSC CGL 2026 General Science book (₹149): www.shanmugamiasacademy.in/study-materials/ssc-cgl-general-science

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