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1336. Epoxy resins are used as
A. moth repellants
B. isecticides
C. detergents
D. adhesives
Explanation:
1337. ""Gobar gas"" contains mainly :
A. carbon dioxide
B. acetuylene
C. ethylene
D. methane
Explanation:
1338. Stainless steel is an alloy of :
A. iron, carbon and nickel
B. iron and manganese
C. iron, chromium and zinc
D. iron, chromium and nickel
Explanation:
1339. Which of the following statements about ""dry ice"" are correct ? 1. It is a useful refrigerant.2. On heating, it turns into a liquid.3. It has acidic properties.4. It causes burns when pressed against the skin
A. 1 and 3
B. 1, 2 and 3
C. 2 and 4
D. 1, 3 and 4
Explanation:
1340. Consider the following statements with reference to X-rays : 1. They produce heat when absorbed by matter2. They are generated when fast moving electrons strike a metal target 3. They can penetrate through a thin sheet of aluminium Which of the statements given above are correct ?
A. 1, 2 and 3
B. 1 and 2
C. 2 and 3
D. 1 and 3
Explanation:
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