Everyday Science MCQs

5120 MCQs  (Page 168 of 512)

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Which one of the following will be sulphonated readily ?
A. Chlorobenzene
B. Toluene
C. Nitrobenzene
D. Benzene
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When CO2 is made to react with ethy1 magnesium iodide in dry ether followed by acid hydrolysis yields______________?
A. Carboxylic acid
B. Ethanoic acid
C. Propanoic acid
D. Butanoic acid
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Ethy1 chloride on reduction in the presence of Zn/HCI produces___________________?
A. N. butane
B. Ethanol
C. Ethane
D. Diethy1 ether
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For industrial preparation of CH3CHO catalytic promoter is_________________?
A. Pdcl2
B. Cu2cl2
C. Cucl2
D. Pbcl2
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Which of the following is not a fatty acid ?
A. Propanoic acid
B. Acetic acid
C. Phthalic acid
D. Butanoic acid
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Which one of the following fertilizers provides the nitrogen and phosphorus to the plant ?
A. Urea
B. Calcium superphosphate
C. Diammonium phosphate
D. Potassium nitrate
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Chlorination of water may be harmful if the water contains_________________?
A. Ammonia
B. Dissolved oxygen
C. Carbon dioxide
D. All
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The mass of one mole of electron is________________?
A. 1.008
B. 0.55
C. 0.184
D. 1.637
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The number of atoms in a molecule determines________________?
A. Macromolecule
B. Macromolecule
C. Molecularity
D. Atomicity
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Which element has same isotopes like palladium___________________?
A. Nickel
B. Calcium
C. Cadmium
D. Tin
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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