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Chemistry

Chemistry
What is the element required for solar energy conversion ?

Silicon
Ultra pure carbon
Beryllium
Tantalum

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Chemistry
By which organic compound all the oils are known ?

Protein
Carbohydrate
Hydrocarbon
Ester

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Chemistry
The orientation of an atomic orbital is governed by

Spin quantum number
Azimuthal quantum number
Principal quantum number
Magnetic quantum number

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Chemistry
In arc welding, Argon is used because of its

Ability to lower the melting point of the metal
Low reactivity with metal
High calorific value
High flammability

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Chemistry
What is a common name for the substance which irritates lachrymal glands ?

Anaesthetic Gas
Laughing Gas
Noble Gas
Tear Gas

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Chemistry
The process of removing calcium and magnesium from hard water is known as

Filtration
Water softening
Flocculation
Sedimentation

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MORE MCQ ON Chemistry

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