Processing math: 51%




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11.

 Benzaldehyde can be converted to benzonitrile by treatment with


A) NH3

B) NH3 followed by reaction C6H5SO2Cl

C) NH2OH followed by reaction with acetic anhydride

D) NH4OH



12.

Match the following

1372021156_m8.PNG


A) A:IV,B:III,C:II,D:I

B) A:II,B:III,C:IV,D:I

C) A:II,B:II,C:I,D:IV

D) A:I,B:IV,C:III, D:II



13.

Statement (A) Mg can reduce Al2O3 above  13500C

 Statement (B)   Al can reduce MgO below 13500C

 The correct answer is 


A) Both (A) and (B) are wrong

B) (A) is correct, but (B) is wrong

C) (A) is wrong , but (B) `is correct

D) Both (A) and (B)are correct



14.

A solution of 17.1 w% of surcose (molar mass =342gmol1)  is isotonic with a x w% solution of oxalic acid (molar mass =90g mol-1)  . assume the degree of dissociation of  oxalic acid as 0.01 . what is x?


A) 9

B) 0.45

C) 4.41

D) 0.90



15.

Calculate the depression in the freezing point of a solution  containing 0.1 g of K_{3}[Fe(CN)_{6}] in 100 g of H_{2}O? (molecular  weight of  K_{3}[Fe(CN)_{6}] =369; K_{f}=1.86 K Kg mol-1)


A) 0

B) 1.223

C) 0.0226

D) 0.226



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