Discussion
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- Question
Oxide of which of the following will turn red litmus blue?
Options- A. Magnesium
- B. Phosphorus
- C. Sulphur
- D. Carbon
- Correct Answer
- Magnesium
- 1. 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 Discuss
- 2. 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 Discuss
- 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 Discuss
- 4. The main mineral constituents of the continental mass are ________ and alumina.
Options- A. iron oxide
- B. silica
- C. water
- D. oxygen Discuss
- 5. 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 Discuss
- 6. Which of the following are highly compressible?
Options- A. Solid
- B. Liquid
- C. Gas
- D. Solid and Liquid Discuss
- 7. ___________ 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 Discuss
- 8. 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 Discuss
- 9. 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 Discuss
- 10. Which among the following is used in making liquors, medicines and as a fuel in aircrafts?
Options- A. Propyl alcohol
- B. Dimethyl alcohol
- C. Ethyl alcohol
- D. Methyl alcohol Discuss
Chemistry problems
Search Results
Correct Answer: Electroplating
Correct Answer: 100
Correct Answer: Chemical Change
Correct Answer: silica
Correct Answer: Open system
Correct Answer: Gas
Correct Answer: Greenhouse
Correct Answer: 20
Correct Answer: Only I and II
Correct Answer: Ethyl alcohol
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