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1. Method used for purifying petroleum is (NTSE Madhya Pradesh, Stage-I, 2012-13)
Simple distillation
Steam distillation
Vacuum distillation
Fractional distillation
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2. Unsaturated hydrocarbon is (NTSE Madhya Pradesh, Stage-I, 2012-13)
CH4
C2H6
C2H4
C2HsOH
3. If 0.5 g of any sUbstance is completely transformed into energy, then how much energy in kilojoule will be obtained? (NTSE Madhya Pradesh, Stage-I, 2012-13)
1.5 x 1010 kilojoule
3.0 x 1010 kilojoule
4.5 x 1010 kilojoule
6.0 x 1010 kilojoule
4. Out of following which set of hydrocarbons undergo addition reactions? C2 H6, C3H8 C3H6, C2H2 and CH4 (NTSE Panchkula, Chandigarh, Stage-I, 2012-13)
C2H6 and C3H8
C3H6 and C2H2
CH4 and C2H6
C3H8 and C2H2
5. The percentage of methane in biogas is approximately (NTSE Mizoram, Stage-I, 2012-13)
30%
40%
35%
60%
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