GENERAL SCIENCE

 1. In fireworks, the green flame is produced because of
A. sodium
B. barium
C. mercury
D. potassium

2. Permanent hardness of water can be removed by adding
A. chlorine
B. washing soda
C. potassium permanganate
D. bleaching powder
3. Marsh gas is

A. nitrogen
B. ethane
C. methane
D. hydrogen
4. LPG consists of mainly

A. methane, ethane and hexane
B. ethane, hexane and nonane
C. methane, hexane and nonane
D. methane, butane and propane

5. Air is a/an

A. compound

B. element
C. electrolyte
D. mixture

ANSWERS:
1. Answer: Option B
2. Answer: Option B
3. Answer: Option C
4. Answer: Option D
5. Answer: Option D

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Milan Tomic

Hi. I’m Designer of Blog Magic. I’m CEO/Founder of ThemeXpose. I’m Creative Art Director, Web Designer, UI/UX Designer, Interaction Designer, Industrial Designer, Web Developer, Business Enthusiast, StartUp Enthusiast, Speaker, Writer and Photographer. Inspired to make things looks better.

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