Everyday Science MCQs

5120 MCQs  (Page 276 of 512)

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Which compound will readily undergo sulphonation ?
A. Benzene
B. Nitro benzene
C. Toluene
D. Chlorobenzene
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Which one of the following statement is not correct about benzene ?
A. On hydrogenation 208 kj/mole is liberated
B. C-h bond length in benzene is 1.09 a?
C. Molecular mass of benzene is 78.108
D. Resonance energy of benzene is 150.5 k cal/mole
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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
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Which compound form benzoic acid on oxidation with acidified KMnO4 or K2Cr2O7 ?
A. Toluene
B. Ethyl benzene
C. N-propyl benzene
D. All
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What is the molecular formula of Benzenetriozonide ?
A. C6h6o9
B. C6h5o8
C. C6h5o9
D. C6h6o6
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Which one can form complex ?
A. Na
B. Cr
C. Li
D. K
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Addition of 2% gypsum in cement________________?
A. Triggers hydration
B. Triggers hydrolysis
C. Prevents rapid hardening
D. All of the above
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Phenanthrene is a fused polycyclic compound contains __________ benzene rings ?
A. Two
B. Three
C. Four
D. Five
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How many electrons are there in benzene to form delocalized electron cloud________________?
A. 3
B. 4
C. 6
D. 8
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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
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Word of the Day
25 Jul
January
a preference or special liking for something; a bias in favour of something.
2021:00:00

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