Chemistry - Comprehensive Mock Test 25

Question 241 Medium

Which one of the following will turn red litmus blue?

A) Vinegar B) Baking soda solution C) Lemon juice D) Soft drinks

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Question 242 Easy

Which one of the following is acidic?

A) Lemon juice B) Tomatoes C) Milk D) All

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Question 243 Easy

The tilting of the earth is responsible for?

A) Change of days B) Change of the sun�s rays C) Change of the season D) None

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Question 244 Easy

Stars appear to move from?

A) West to east B) East to west C) North to south D) South to west

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Question 245 Medium

What is the gap between the orbit of mars and Jupiter called?

A) Asteroids B) Comets C) Meteor D) Meteorite

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Question 246 Easy

The Internet is an example o1 safs?

A) Cell switched network B) circuit switched network C) Packet switched network D) All of above

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Question 247 Easy

Alum is used?

A) as an analgesic B) in the purification of water C) as a fertilizer D) as a disinfectant

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Question 248 Medium

If people sleep in closed rooms where charcoal fire is burning , they die due to ?

A) methane B) carbon monoxide C) carbon dioxide D) phosgene

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Question 249 Medium

A bond formed by the transfer of electrons between atoms of the elements is called

A) Co-ordinate bond B) Covalent bond C) Ionic bond D) Covalent bond

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Question 250 Easy

How many Covalent Bonds can Nitrogen form?

A) 1 B) 2 C) 3 D) 4

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