Chemistry problems
- 1. Warming Ammonium chloride with sodium hydrochloride in a test tube is an example of
Options- A. Open system
- B. Closed system
- C. Isobaric system
- D. Isothermal system Also asked in: Bank Exams
Correct Answer: Open system
- 2. The main mineral constituents of the continental mass are ________ and alumina.
Options- A. iron oxide
- B. silica
- C. water
- D. oxygen Also asked in: Bank Exams
Correct Answer: silica
- 3. A change in which one or more new substances are formed is called _________.
Options- A. Physical Change
- B. Chemical Change
- C. Rusting
- D. Galvanisation Also asked in: Bank Exams
Correct Answer: Chemical Change
- 4. The salt concentration (measured as salinity in parts per thousand), is greater than _______ % in hypersaline lagoons.
Options- A. 50
- B. 100
- C. 150
- D. 200 Also asked in: Bank Exams
Correct Answer: 100
- 5. The process of depositing a layer of any desired metal on another material by means of electricity is called ___________.
Options- A. Electroplating
- B. Galvanisation
- C. Rusting
- D. Crystallisation Also asked in: Bank Exams
Correct Answer: Electroplating
- 6. Oxide of which of the following will turn red litmus blue?
Options- A. Magnesium
- B. Phosphorus
- C. Sulphur
- D. Carbon Also asked in: Bank Exams
Correct Answer: Magnesium
- 7. Which of the following are highly compressible?
Options- A. Solid
- B. Liquid
- C. Gas
- D. Solid and Liquid Also asked in: Bank Exams
Correct Answer: Gas
- 8. ___________ gases absorb long wave (infrared) radiation from the earth and emit it again towards the earth.
Options- A. Carbon dioxide
- B. Methane
- C. Greenhouse
- D. Ozone Also asked in: Bank Exams
Correct Answer: Greenhouse
- 9. The modern periodic table consists of 18 groups and 7 periods. What is the atomic number of the element placed in the 2nd group and the 4th period?
Options- A. 20
- B. 22
- C. 18
- D. 10 Also asked in: Bank Exams
Correct Answer: 20
- 10. Metals are generally ______. I. Ductile II. Malleable III. Poor conductors of heat
Options- A. Only I and II
- B. Only I and III
- C. Only II and III
- D. All I, II and III Also asked in: Bank Exams
Correct Answer: Only I and II
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