JEE Chemistry Solved Question Paper 2004 | Previous Year Papers | Zigya

Subject

Chemistry

Class

JEE Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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1.

6C12 and 1T3 are formed in nature due to the nuclear reaction of neutron with

  • 7N14

  • 6C13

  • 2He4

  • 3Li6


2.

In which of the following reactions, the concentration of product is higher than the concentration of reactant at equilibrium? (K = equilibrium constant)

  •  B; K = 0.001

  •  N; K = 10

  •  Y; K = 0.005

  •  P; K = 0.01


3.

The electrochemical equivalent of a metal is 'x' g coulomb-1. The equivalent weight of metal is

  • x

  • x × 96500

  • x96500

  • 1.6 × 1019 × x


4.

Which of the following pairs of ions are colourless ?

  • Ti3+, Cu2+

  • Sc3+, Zn2+

  • Co2+, Fe3+

  • Ni2+, V3+


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5.

Which of the following is not correct regarding the properties of ionic compounds?

  • Ionic compounds have high melting and boiling points

  • Their reaction velocity in aqueous medium is very high

  • Ionic compounds in their molten and aqueous solutions do not conduct electricity

  • They are highly soluble in polar solvents


6.

grams of water is mixed in 69 g of ethanol. Mole fraction of ethanol in the resultant solution is 0.6. What is the value of x in grams?

  • 54

  • 36

  • 180

  • 18


7.

Match the following lists:
List - I List - II
A. Ethane 1. sp carbons
B. Ethylene 2. 6 sp2 carbons
C. Acetylene 3. 2 sp3 carbons
D. Benzene

4. 2 spcarbons

5. 1 sp and 1 sp2 carbons

  • A - 3; B - 4; C - 1; D - 2

  • A - 4; B - 5; C - 3; D - 2

  • A - 3; B - 1; C - 2; D - 5

  • A - 2; B - 3; C - 4; D - 5


8.

The number of oxygen atoms bonded to one phosphorous atom in P4O6 is

  • 4

  • 3

  • 6

  • 5


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9.

Which of the following has S - S bond?

  • H2S2O6

  • H2S2O7

  • H2S2O8

  • Mustard gas


10.

An organic compound containing C and H has 92.3% of carbon. Its empirical formula is

  • CH

  • CH3

  • CH2

  • CH4


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