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Chemistry

Chemistry
How many electrons can be accommodated in d-orbital

6
10
8
3

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Chemistry
Nitrogen in water is commonly found in the form of

Nitrous oxide
Nitric oxide
Nitrite
Nitrate

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Chemistry
Choose the incorrect statement pertaining to organic compounds

They have low melting and boiling points
They contain mainly carbon and hydrogen
They are not easily combustible
They do not dissolve in water

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Chemistry
If the equilibrium constants for the systems H2 + I2 ? 2HI and 2HI ? H2 + I2 are K1 and K2 respectively, the relationship between K1 and K2 is :

K1 = K2
K1 = K2/2
K 1 = 1 /K2
K1 = 2K2

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Chemistry
The major constituent of gobar gas is

Methane
Isobutane
Butane
Carbon dioxide

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Chemistry
The mineral containing both magnesium and calcium is

calcite
magnesite
carnallite
dolomite

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