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VITEEE 2014 :: Chemistry :: General questions




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11.

Iodine is formed when potassium iodide reacts with a solution of 


A) $ZnSO_{4}$

B) $CuSO_{4}$

C) $(NH_{4})_{2}SO_{4}$

D) $Na_{2}SO_{4}$



12.

Which of the following has the maximum number of unpaired d-electrons?


A) $Fe^{2+}$

B) $Cu^{+}$

C) Zn

D) $Ni^{3+}$



13.

Peptisation involves


A) precipitation of colloidal particles

B) disintegration of colloidal aggregates

C) evaporation of dispersion medium

D) impact of molecules of the dispersion medium on the colloidal particles



14.

Which of the following pairs give positive Tollen's test?


A) Glucose , sucrose

B) Glucose ,fructose

C) Hexanal, acetophenone

D) Fructose,sucrose



15.

Which of the following has an ester linkage ?


A) Nylon-66

B) Dacron

C) PVC

D) Bakelite



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