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1009 available questions

Chemistry · Question 21

The molecules of ______________ have dipole-dipole interaction

  1. methane
  2. neon
  3. ammonia
  4. ethane-ethyl alcohol
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Correct answer: C

ammonia

Chemistry · Question 22

Which of the following ionic compounds has the highest value of lattice energy?

  1. NaF
  2. LiCl
  3. Nal
  4. Ki
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Correct answer: A

NaF

Chemistry · Question 23

For a reaction whose rate constant has units dm3 mol-1 s-1, what is the overall order of reaction?

  1. First order
  2. Third order
  3. Zero order
  4. Second order
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Correct answer: D

Second order

For an overall order n, the units of the rate constant are concentration1-n time-1. The units dm3 mol-1 s-1 therefore correspond to a second-order reaction.

Chemistry · Question 24

Which of the following compound is formed as a result of polymerization of acetylene?

  1. benzene
  2. 1,3,5 - cyclohexatriene
  3. Hexene
  4. Butane
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Correct answer: A

benzene

Chemistry · Question 25

While calculating vapors pressure of a liquid in manometer, the coloumn of mercury facing the vapors of a liquid is __________due to pressure on surface of liquid in flask.

  1. compressed
  2. depressed
  3. rise
  4. lowers
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Correct answer: B

depressed

Chemistry · Question 26

How many chain isomers of Pentane is possible?

  1. Two
  2. Four
  3. Three
  4. Five
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Correct answer: C

Three

Chemistry · Question 27

Casein is used in manufacturing of _________________________.

  1. Butttons & buckles
  2. Tanning of leather
  3. Gelatin
  4. Bakery goods
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Correct answer: A

Butttons & buckles

Chemistry · Question 28

In the presence of KF, AIF3 is soluble in HF, ifnd the complex formed:

  1. K3[A1F6]
  2. A1H3
  3. K[A1F3H]
  4. K3[A1F3H3]
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Correct answer: A

K3[A1F6]

Chemistry · Question 29

Free radial reactions take place in the presense of ______________?

  1. Heat
  2. Sun light
  3. Catalyst
  4. Oxygen
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Correct answer: B

Sun light

Chemistry · Question 30

Order of dischage of ions depends upon:

  1. Their temperature
  2. Their concentraion
  3. Their Activation Energy
  4. All of these
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Correct answer: B

Their concentraion