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Chemistry

Chemistry
The molecule which has the highest percentage of ionic character among the following is

HBr
HI
HF
HCI

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Chemistry
The hottest part of the gas flame is known as

blue zone
non-luminous zone
luminous zone
dark zone

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Chemistry
The element used in the manufacture of safety matches is

Magnesium
Phosphorous
Silicon
Sulphur

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Chemistry
Chemically ‘Quick Silver is known as

Silver
Copper
Mercury
Aluminium

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Chemistry
When quick lime is added to water

Temperature decreases
No heat change takes place
Heat is absorbed
Heat is liberated

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Chemistry
What is the covalency of nitrogen in ammonia molecule

2
5
3
4

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