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MHT CET 2017 :: Chemistry :: General questions




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21.

Aldehyde or ketones when treated with $C_{6}H_{5}-NH-NH_{2}$ , the product formed is 


A) semicarbazone

B) phenlhydrazone

C) hydrazone

D) oxime



22.

Which of the following statement (s) is/are incorrect in the case of Hofmann bromamide degradation?


A) Reaction is useful for decreasing length of carbon chain by one carbon atom

B) It gives tertiary amine

C) It gives primary amine

D) Aqueous or alco.KOH is used with bromine



23.

Calculate the work done during compression of 2 mol of an ideal gas from a volume  of 1 m3 to 10 dm3 300K against a pressure of 100KPa


A) -99 kJ

B) +99 kJ

C) +22.98 k J

D) -22.98k J



24.

Which among the following is not is mineral of iron ?


A) Haematite

B) Magnesite

C) Magnetite

D) Siderite



25.

In case of substituted aniline, the group which decreases the basic strength is 


A) $-OCH_{3}$

B) $-CH_{3}$

C) $-NH_{2}$

D) $-C_{6}H_{5}$



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