- (A) SO2
- (B) H2S
- (C) CO2
- (D) C2H4
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- (A) Fe
- (B) A
- (C) Cr
- (D) All of the above
- (A) S
- (B) Se
- (C) Te
- (D) Po
- (A) P2O3
- (B) P2O5
- (C) H3PO3
- (D) All have same smell
- (A) FeSO4.No
- (B) FeSO4.No2
- (C) FeSO4.No3
- (D) FeSO4.N2o
- (A) Lead pencils
- (B) Abrasive
- (C) Lubricant
- (D) Electrode of electrolytic cell
- (A) Yolk of egg
- (B) Bone
- (C) Nerves
- (D) Steel
- (A) Flourine
- (B) Chlorine
- (C) Iodine
- (D) Bromine
- (A) Displacement reaction
- (B) Double displacement reaction
- (C) Disproportionation reaction
- (D) Reduction reaction
- (A) Cl2O
- (B) ClO2
- (C) Cl2O6
- (D) Cl2O7
