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Question Detail
The term PVC used in the plastic industry stands for
- polyvinyl chloride
- polyvinyl carbobate
- phosphor vanadiu chloride
- phosphavinyl chloride
Answer: Option A
1. The single acid which dissolves gold is ?
- Aqua regia
- Hydrochloric acid
- Nitric acid
- Selenic acid
Answer: Option A
2. Which acid is present in lemon ?
- marlic acid
- citric acid
- lactic acid
- tartaric acid
Answer: Option B
Explanation:
citric acid is present in lemon.
3. Water drops are spherical because of ?
- viscosity
- density
- polarity
- surface tension
Answer: Option D
4. All noble gases are ?
- colourless
- colourless
- colourless and odourless
- colourless and but have odour
Answer: Option C
5. The luster of a metal is due to :
- high polishing
- high density
- chemical inertness
- presence of free electrons
Answer: Option D
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