Everyday Science MCQs

5120 MCQs  (Page 259 of 512)

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Methanol can be obtained from_________________?
A. Water gas
B. Destructive distillation of wood
C. Methane
D. All
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Absolute alcohol is obtained when rectified spirit is treated with__________________?
A. Ca(oh)2
B. Caco3
C. Cacl2
D. Cao
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Phenol was isolated by Runge from________________?
A. Vegetable oil
B. Coaltar
C. Wood
D. None of these
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Which one of the following is also known as tartaric acid ?
A. 2 3-dihydroxy butance 1 4 -dioic acid
B. 2 3 -dihydroxy butanedioic acid
C. 2 3 -dihydroxy butanioc acid
D. 2 2 -dihydroxy butanoic acid
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The residue obtained after the crystallization of sugar from concentrated sugar cane juice is called__________________?
A. Mother liquor
B. Filterate
C. Extract
D. Molasses
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The process of fermentation of starch involve many enzymes the sequence of enzymes used are____________________?
A. Diastase-maltase-zymase
B. Zymase-maltase-diastase
C. Maltase-diastase-zymase
D. Diastase-zymase-maltase
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K2Cr2O7/H2SO4 generate____________________?
A. Oxygen
B. Hydrogen
C. Nascent oxygen[o]
D. Nascent hydrogen[h]
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Which alcohol will undergo elimination reaction to give alkene in the presence of acidic potassium dichromate ?
A. Primary alcohol
B. Secondary alcohol
C. Tertiary alcohol
D. All of above
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When two moles of ethyl chloride react with two moles of sodium in the presence of ether what will be formed ?
A. 2 moles of ethane
B. 1 mole of ethane
C. 2 moles of butane
D. 1 mole of butane
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When CO2 is made to react with ethyl magnesium iodide followed by acid hydrolysis the product formed is _________________?
A. Propane
B. Propanoic acid
C. Propanal
D. Propanol
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Word of the Day
24 Jul
Untenable
(especially of a position or view) not able to be maintained or defended against attack or objection.
ناقابل مدافعت، غیر مستحکم، جو دلیل سے ثابت نہ ہو سکے

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