CBSE Questions for Class 12 Engineering Chemistry The P-Block Elements Quiz 14 - MCQExams.com

The electronic configuration of chlorine is _________
  • 2, 7
  • 2, 8, 8, 7
  • 2, 8, 7
  • 2, 7, 8
In which of the following, oxidation number of chlorine is $$ + 5 ?$$
  • $$Cl_{2}O_{7}$$
  • $$\mathrm { ClO } _ { 3 } ^ { - }$$
  • $$\mathrm { CHO } ^ { - }$$
  • $$\mathrm { ClO } _ { 4 } ^ { - }$$
Which of the following compounds undergoes haloform reaction?
  • $$CH_{3}COCH_{3}$$
  • $$HCHO$$
  • $$CH_{3}CH_{2}Br$$
  • $$CH_{3} - O - CH_{3}$$
Which of the following is correct statement regarding $$N(CH_3)_3$$ and $$N(SiH_3)_3$$?
  • $$N(SiH_3)_3$$ is planar and more basic than $$N(CH_3)_3$$
  • $$N(SiH_3)_3$$ is planar and less basic than $$N(CH_3)_3$$
  • $$N(CH_3)_3$$ is planar and more basic than $$N(SiH_3)_3$$
  • $$N(CH_3)_3$$ is pyramidal and less basic than $$N(SiH_3)_3$$
What is the action of following reagents on ammonia ?
  • i)Excess of air
  • ii)Excess of chlorine
  • iii)Na metal
  • none of these
Which of the following is incorrect?
  • Red $$P$$ is toxic
  • White $$'P'$$ is highly soluble in $$CS_{2}$$
  • Black $$'P'$$ is thermodynamic is most stable
  • White $$'P'$$ is soluble in $$NaOH$$ evolves $$PH_{3}$$
Which of the following is true for $$N_{2}O_{5}$$?
  • Paramagnetic
  • Anhydride of $$HNO_{2}$$
  • Brown gas
  • Exist in solid In form of $$[NO^{+}_{2}][NO_{3}^{-}]$$
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