Page Number- 4

(1) Which among the following is not a semi-metal??

  • A. Si
  • B. Ge
  • C. Ti
  • D. As
0
(c) Ti

(2) The strongest acid among the following is : ?

  • A. H2SO4
  • B. Hcl
  • C. HoCl
  • D. HoBr
0
(a) H2SO4

(3) If we increase the temperature, what will happen to the pH value of pure water??

  • A. Increase
  • B. Decrease
  • C. Remains same
  • D. Increase and then decrease
0
(b) Decrease

(4) Which one has the highest basic strength??

  • A. Ch3‐
  • B. NH2-
  • C. HCO3-
  • D. No3-
0
(a) Ch3‐

(5) Find out the strongest conjugate base??

  • A. Cl-
  • B. NH2-
  • C. SO4²-
  • D. I-
0
(b) NH2-

(6) Which one has the highest solubility in H2O??

  • A. Na2S
  • B. Cu2S
  • C. Ag2S
  • D. CdS
0
(a) Na2S

(7) The Unit of active mass of a substance is??

  • A. Dimensionless
  • B. Mole / L
  • C. g / L
  • D. mole -L
0
(b) Mole / L

(8) The dependence of vapour pressure and temperature is explained by ??

  • A. Arrhenius equation
  • B. Claussius Clayperon equation
  • C. Vant Hoff equation
  • D. Tautons
0
(b) Claussius Clayperon equation

(9) What is the correct increasing order of acid strength??

  • A. CH4 < NH3 < H2O < HF
  • B. HF < H2O < NH3 < CH4
  • C. NH3 < HF < H2O < CH4
  • D. NONE OF THESE
0
(a) CH4 < NH3 < H2O < HF

(10) Which of the following species can act as a Lewis base? ?

  • A. H2O
  • B. AlCl3
  • C. BF3
  • D. Mg²+
0
(a) H2O
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