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VITEEE 2015 :: Chemistry :: General questions




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11.

With excess  of water both P2O5  and PCl5 give


A) $H_{3}PO_{3}$

B) $H_{3}PO_{2}$

C) $H_{3}PO_{4}$

D) $H_{4}P_{2}O_{7}$



12.

The ratio of slopes of Kmax   vs  V and V0  vs v curves  in trhe photoelectric effects gives (v= freequency, Kmax = maximum kinetic energy ,  v0 = stopping potential)

 


A) the ratio of Planck&#39;s constant of electronic charge

B) work function

C) Planck&#39;s constant

D) charge of electron



13.

The  concentration of the reactant A in the reaction A → B at different times are given below

 Concentration (M)   Time (minutes)

0.069                         0

0.052                         17

0.035                         34

0.018                         51

The rate constant of the reaction according to the correct order of reaction is 


A) 0.001 M/min

B) 0.001 $min^{-1}$

C) 0.001 min/M

D) 0.001 $M^{-1}min^{-1}$



14.

Which  one of the following is a case of negative  adsorption?


A) Acetic acid solution in contact with animal charcoal

B) Dilute KCl solution in contact with blood charcoal

C) Concentration KCl solution is contact with blood charcoal

D) $H_{2}$ gas in contact with charcoal at 300 K



15.

 An organic  compound having carbon, hydrogen and sulphur contains 4% of sulphur . The minimum molecular weight of the compound is 


A) 200

B) 400

C) 600

D) 800



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