A. Hydrogen
B. Oxygen
C. Sulphur
D. OH
Related Mcqs:
- When – COOH is attached directly to the benzene ring the acid is called__________________?
A. Aliphatic
B. Alicyclic
C. Carboxylic
D. Aromatic - When benzene is substituted by halogens only which one of the following halogens only which one of the following halogens is given the number one position in the ring while writing the name of compound ?
A. Bromine
B. Chlorine
C. Fluorine
D. Iodine - Chlorine Cl when attached to benzene has________?
A. +I and +R effect
B. -1 and +R effect
C. +1 and -R effect
D. -I and -R effectSubmitted by: Muhammad Ali Kunbhar
- In primary alkyl halides the halogen atom is attached to a carbon which is further attached to how many carbon atoms__________________?
A. two
B. three
C. one
D. four - Replacement of hydrogen of benzene by alkyl group in the presence of alkyl halide & aluminum chloride is known as__________________?
A. Dows process
B. Friedel & Craft acylation
C. Friedel & Craft alkylation
D. Clemmenson reduction - Protein attached to some non protein group is called____________________?
A. Derived protein
B. Sample protein
C. Proteoses
D. Conjugated protein - Acid present in acid rain may be__________________?
A. H2SO4
B. HNO3
C. both A and B
D. none - The common thing in phthalic acid and oxalic acid is that both are_________________?
A. Aromatic
B. Dicarboxylic
C. Hydrocarbons
D. Strong acids - Phosphoric acid is a weak acid and its basicity is____________________?
A. 1
B. 3
C. zero
D. 2 - When sulphuric acid is treated with ethanol sulphuric acid behaves like________________?
A. an acid
B. a dehydrating agent
C. an oxidizing agent
D. as sulphonating agent
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