What are the 4 major elements of amino acids?
A. Iron, Sulphur, Silicon and Potassium
B. Helium, Lithium, Beryllium and Boron
C. Plutonium, Uranium, Prometheum and Neon
D. Carbon, Hydrogen, Oxygen and Nitrogen
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As a dehydrating agent to convert ethanol to ethane . . . . . . . . is used.
A. nickel
B. sunlight
C. concentrated sulphuric acid
D. heat
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What is the chemical formula of glycerol?
A. C2 H5 O2
B. C3 H7 OH
C. C3 H5 OH
D. C3 H8 O3
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Which of the following contains ethanoic acid?
A. Lemon juice
B. Orange juice
C. White vinegar
D. Tomato
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Consider the following statements.
1. Carbon black is obtained when methane is heated in absence of air.
2. Kerosene is a mixture of alphatic hydrocarbons.
3. Most of hydrocarbons from petroleum are obtained by fractional distillation.
Which of the statements given above are correct?
A. 1 and 2
B. 1 and 3
C. 2 and 3
D. 1, 2 and 3
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What is the bond angle (in degrees) in the structure of a benzene molecule?
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Which of the following acid found in Apple?
A. Malic acid
B. Nitric acid
C. Formic acid
D. Sulphuric acid
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Which organic compound has the structure R - COOH, with R referring to the alkyl, alkenyl, aryl or other group?
A. Ketone
B. Ester
C. Aldehydes
D. Carboxylic acid
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Which one of the following is burned in oxygen, producing a very hot flame, used for welding and cutting metals?
A. Butane
B. Methane
C. Ethylene
D. Acetylene
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Functional group -CHO is present in which of the following?
A. Ketone
B. Alcohol
C. Aldehyde
D. Carboxylic acid
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Which of the following is a saturated hydrocarbon?
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What is the IUPAC name for acetic acid?
A. propanoic acid
B. butanoic acid
C. ethanoic acid
D. methanoic acid
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Consider the following statements about nitrobenzene.
1. Nitrobenzene is highly toxic and readily absorbed through the skin.
2. Nitrobenzene is consumed in the production of aniline.
3. It is also used in shoe and floor polishes.
Which of the statements given above are correct?
A. 1 and 2
B. 1 and 3
C. 2 and 3
D. 1, 2 and 3
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The muscle fatique appears due the accumulation of the which of the following?
A. Pyruvic acid
B. Lactic acid
C. Oxid acetic acid
D. Uric acid
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In organic chemistry, which of the following is an empirical rule used to predict the regioselectivity of electrophilic addition reactions of alkanes and alkynes?
A. Cornforth's rules
B. Bredt's rule
C. Markovnikov's rule
D. Baldwin's rules
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In a compound the elements are always present in definite proportions by
A. mass
B. volume
C. size
D. None of these
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The boiling point of ethanol is-
A. 180°C
B. 58°C
C. 98°C
D. 78°C
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To weld metals together, high temperature required such a high temperature is obtained by burning
A. acetylene in oxygen
B. LPG in oxygen
C. methane in oxygen
D. acetylene in nitrogen
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Arrange the following compounds in increasing order according to the length of their carbon bond:
Ethine, Ethyne, Ethane,
A. Ethyne, Ethane, Ethane
B. Ethane, Ethyne, Ethine
C. Ethine, Ethyne, Ethane
D. Ethane, Ethine, Ethyne
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Which of the following compounds has a double bond?
A. acetylene
B. ethene
C. ethane
D. methane
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