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Chemistry

Chemistry
Among the following, which is always found in free-state in nature?

Sodium
Silver
Gold
Copper

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Chemistry
Suspension particles have the size between

10–5 – 10–7cm
10–8 – 10–10cm
10–1 – 10–2 cm
10–2 – 10–4 cm

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Chemistry
Sodium bicarbonate is commercially known as

Caustic soda
Soda lime
Baking soda
Washing soda

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Chemistry
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is

3.05 gram
5.05 gram
2.05 gram
4.05 gram

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Chemistry
Which among the following is used to dilute oxygen in the gas cylinders used by divers ?

Argon
Krypton
Helium
Neon

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Chemistry
Which one out of the following helps in burning ?

Nitrogen
Carbon monoxide
Oxygen
Carbon dioxide

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MORE MCQ ON Chemistry

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