Question 31 : On heating a liquid at its dynamic equilibrium the concentration of molecules in vapour state as well as in liquid state
1. Remains constant
2. Neither increase nor decreases
3. Increase
4. Decreases
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Question 32 : The number of electron in M-shell of an element having atomic number 24 is
1. 11
2. 12
3. 13
4. 10
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Question 33 : Ethyl halides are reduced by_________ hydrogen.
1. ordinaiy
2. none of above
3. nascent
4. nil
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Question 34 : A source of light is passed through isolated chlorophyll solution.When source is removed, which light is emitted by solution?
1. Red- Orange
2. Green
3. No light is emitted
4. Same as source of light
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Question 35 : Ethane is _________ in water.
1. soluble
2. insoluble
3. solvent
4. none of above
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Question 36 : Acetylenic __________ hydrogen atoms are in nature.
1. acidic
2. solvent
3. basic
4. none of above
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Question 37 : The reaction of alkanes with chlorine is _________ than with bromine.
1. none of above
2. lower
3. faster
4. between
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Question 38 : Alkanes ______________ chemically with electrophiles and nucleophiles.
1. do not react
2. react
3. nil
4. none of above
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Question 39 : Methane is oxidized to _________ at 400c° and 200 atm. in presence of Cu
1. none of above
2. nil
3. methanal
4. methanol
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Question 40 : Iodine gives _______product with acetylene.
1. tetra-iodo
2. dia-aiodo
3. none of above
4. di-iodo
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