Question Paper Chemistry
1: Which of the following has tetrahedral sturucture?
A: CO3
B: K4[Fe(CN)6]
C: NH4
D: None of these
Correct Answer: C
2: Which of the following has minimum freezing point ?
A: 0.1 M NH4Cl
B: 0.1 M K2Cr2O7
C: 0.1 M BaSO4
D: 0.1 Al2 (SO4)3
Correct Answer: D
3: Oxidation number of Mn atom in KMnO4 is
A: +1
B: +3
C: +8
D: +7
Correct Answer: D
4: Nylon-66 is made by using
A: succinic acid
B: benzaldehyde
C: adipic acid
D: benzyl chloride
Correct Answer: C
5: Hydrolysis of acetonitrile in acid medium gives
A: CH3NC
B: CH3COOC2H5
C: CH3COOH
D: CH3CH2OH
Correct Answer: C
6: Aldehydes and ketons are distinguished by using
A: Lucas reagent
B: Tollens reagent
C: Borshe reagent
D: all of these
Correct Answer: B
7: Which of the following combinations would not result in the formulation of a buffer solution?
A: NH3+ HCl
B: NH4Cl + NH3
C: CH3COOH + NaCl
D: NaOH + HC2H3O2
Correct Answer: D
8: IUPAC name of CH3-O-C2H5 is
A: ethye- methyl ether
B: methoxy- ethane
C: methyl- ethyne ether
D: none of these
Correct Answer: B
9: Ethyle chloride is converted into diethyl ether by
A: Wurtz synthesis
B: Perkin’ s reaction
C: Grignard reaction
D: Williamson’s synthesis
Correct Answer: D
10: Which of the following is an anhydride of HNO3?
A: N2O5
B: N2O3
C: N2O4
D: NO2
Correct Answer: A
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