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Chemistry

Chemistry
What is the element required for solar energy conversion ?

Tantalum
Beryllium
Ultra pure carbon
Silicon

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Chemistry
Particulates (< 1 µm size) remaining suspended in air indefinitely and transported by wind currents are called

Mists
Fumes
Aerosols
Smoke

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Chemistry
Which of the following is used to iodise common salt ?

Potassium iodate
Sodium iodide
Potassium iodide
Iodine

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Chemistry
The unit to measure the flow of water is

Ohm meter
Micro Mho
Milli curie
Cusecs

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Chemistry
The mass number of an atom is equal to

the number of protons and electrons
the number of nucleons
the number of neutrons
the number of protons

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Chemistry
The most abundant element by number in the living system is :

Oxygen
Carbon
Nitrogen
Hydrogen

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MORE MCQ ON Chemistry

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