Which inert gas is used in flashlamps for photography ?
- AArgon
- BNeon
- CHelium
- ✓Krypton
Answer: D.
View full solution →75 questions across 9 question groups — pick any mix to generate a CHEMISTRY paper with step-by-step answer keys.
MCQ
8 Q→02[1 Mark Question Answer]
9 Q→03[2 Mark Question Answer]
22 Q→04[5 Mark Question Answer]
8 Q→05Fill in the blanks.
10 Q→06TRUE / FALSE
7 Q→07Match The Following.
2 Q→08Do as Directed.
7 Q→09Draw the diagram of the following.
2 Q→One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Answer: D.
View full solution →Answer: A.
View full solution →Answer: D.
View full solution →Answer: A.
View full solution →Answer: D.
View full solution →| Column A | Column B |
| 1. Oxy-acetylene flame | a. sodium bicarbonate + sulphuric acid |
| 2. Liquid oxygen | b. used for cutting and welding metals |
| 3. Soda-acid fire extinguisher | c. carbon monoxide |
| 4. Poisonous gas | d. LOX |
| e. global warming |
| Column A | Column B |
| 1.Chlorofluorocarbons | a. mixture of sodium bicarbonate and tartaric acid |
| 2.Trinitrotoluene | b. calcium hydroxide solution |
| 3. Baking powder | c. explosive |
| 4. Lime water | d. carbonic acid |
| e. depletion of ozone layer |
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