JEE Chemistry Solved Question Paper 2012 | Previous Year Papers | Zigya

Subject

Chemistry

Class

JEE Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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1.

The hybridization state of C atom in butendioic acid is

  • sp2

  • sp3

  • Both (a) and (b)

  • sp


2.

The conjugate acid of HS- is

  • S2-

  • H2S

  • Both (a) and (b)

  • None of these


3.

The molar concentration of chloride ions in the resulting solution of 300 mL of 3.0 M NaCl and 200 mL of 4.0 M BaCl2 will be

  • 1.7 M

  • 1.8 M

  • 5.0 M

  • 3.5 M


4.

Which of the following has least bond energy?

  • N22-

  • N2-

  • N2+

  • N2


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5.

Which of the following species has highest bond energy?

  • O22-

  • O2+

  • O2-

  • O2


6.

Which of the following is a weak acid?

  • C6H6

  • CH3COOH

  • CH2=CH2

  • CH3COCH3


7.

LPG mainly consist of the following

  • methane

  • hydrogen

  • acetylene

  • butane


8.

Which of the following is least hydrolysed?

  • BeCl2

  • MgCl2

  • CaCl2

  • BaCl2


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9.

The laughing gas is

  • N2O4

  • NO

  • N2O

  • N2O5


10.

The hydrogen ion concentration of a solution is 3.98 × 10-6 mole per liter. The pH value of this solution will be

  • 6.0

  • 5.8

  • 5.4

  • 5.9


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