Order Organic Chemistry Discussion Questions

Order Organic Chemistry Discussion Question
Order Organic Chemistry Discussion Questions
1. Which of the following elements is found
in all organic compounds? [BPSC 2015]
(a) Carbon (b) Calcium
(c) Nitrogen (d) Oxygen
2. A mixture of carbon monoxide and
hydrogen, which is a starting material
for manufacturing a number of organic
compound is
(a) producer gas (b) natural gas
(c) synthesis gas (d) oil gas
3. The first organic compound synthesised
in the laboratory is
(a) urea (b) methane
(c) ethylene (d) acetic acid
4. Which one of the following is the largest
composition in biogas? [NDA 2020]
(a) Carbon dioxide
(b) Methane
(c) Hydrogen
(d) Hydrogen sulphide
Order Organic Chemistry Discussion Questions
5. The gas emerged through the cigarette
lighter is
(a) butane (b) methane
(c) propane (d) radon
6. Acidic hydrogen is present in
(a) ethyne (b) ethene
(c) benzene (d) ethane
7. Methane is a colourless, odourless,
non-toxic but flammable gas. What is
its common name? [SSC CGL 2020]
(a) Blue vitriol (b) Laughing gas
(c) Heating gas (d) Marsh gas
8. Which one of the following is a source
of methane emission into the
atmosphere? [CDS 2012]
(a) Automobile exhaust fume
(b) Industrial chimney
(c) Mining
(d) Wet land
9. Which of the following is the general
formula for saturated hydrocarbons ?
(a) C Hn 2 2 n
[CDS 2018]
(b) C Hn 2 2 n −
(c) C Hn 2 1 n
(d) C Hn 2 1 n −
10. What is the general formula of
alkenes? [SSC (10 2) 2018]
(a) C Hn n2
(b) C Hn 2n 2
(c) C Hn 2n − 2
(d) C Hn 2n − 1
11. Which one of the following is the
correct sequence in increasing order of
molecular weights of the
hydrocarbons? [IAS (Pre) 2001]
(a) Methane, ethane, propane and
(b) Propane, butane, ethane and
(c) Butane, ethane, propane and
(d) Butane, propane, ethane and
12. During the first world war, which of the
following gas was utilised as the
chemical weapon? [IAS (Pre) 1997]
(a) Carbon monoxide
(b) Hydrogen cyanide
(c) Mustard gas
(d) Burning vapour
13. In which one of the following reactions,
the maximum quantity of H2 gas is
produced by the decomposition of 1 g
of compound by H O / O 2 2? [CDS 2018]
(a) CH H O CO 3H 4 2 → 2
(b) CO H O CO H 4 2 → 2 2
(c) CH 1
4 2 2 O CO 2H →
(d) C H 6O 12CO 12H 12 24 2 → 2
14. Which of the following is not the
allotrope of carbon? [SSC 2019]
(a) Graphite
(b) Methane
(c) Diamond
(d) C-60 buckminsterfullerene
15. Which one of the following carbon
compounds will not give a sooty flame?
[NDA 2016]
(a) Benzene (b) Hexane
(c) Napthalene (d) Anthracene
16. How many moles of CO can be
obtained by reacting 2.0 mole of CH4
with 2.0 mole of O2 according to the
equation given below? [CDS 2018]
CH ( ) 1
4 2 2 g O CO 2H →
(a) 2.0 (b) 0.5
(c) 2.5 (d) 4.0
17. In which among the following molecules
is the distance between two adjacent
carbon atoms largest? [CDS 2005]
(a) Benzene (b) Ethane
(c) Ethene (d) Ethyne
18. Which of the following is NOT an
unsaturated carbon compound?
[SSC 2019]
(a) Acetylene (b) Pentene
(c) Butane (d) Benzene
19. Consider the following statements.
I. Methane is also known as marsh gas.
II. The main component of the natural
gas is methane.
III. The main component of the gobar
gas is methane.
Which of the statements given above
are correct?
(a) I and II (b) I and III
(c) II and III (d) I, II and III
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