1.  Physical forces

2.  Covalent forces

3.  Chemical forces

4.  Vander Waals forces

4

Vander Waals forces

Explanation :
No Explanation available for this question

# For a first order reaction, the half life is equal to:

1.  2.303/K

2.  K/0.693

3.  0.693/K

4.  0.693 x K

4

0.693/K

Explanation :
No Explanation available for this question

# If “a” represents the initial concentration, n is the order of the reaction and t1/2 is the half life these three are related as

1.  t1/2 α an

2.  t1/2 α 1/an-1

3.  t1/2 α 1/an

4.  1/an

4

t1/2 α 1/an-1

Explanation :
No Explanation available for this question

# Assertion (A): the molecularity of reaction is a whole number other than zero , but generally less than 3 Reactions (R): the order of a reaction i

1.  Both A and R are false

2.  A is true but R is false

3.  Both A and R are true but R is not the correct explanation of A

4.  Both A and R are true R is the correct explanation to A

4

A is true but R is false

Explanation :
No Explanation available for this question

# The equilibrium constants for the reactions N2(g) + O2 (g) ⇔2NO(g) and NO(g)+1/2O2(g)⇔ NO2(g) are K1 and K2 respectively. Then the equilibrium constant f

1.  K1 – K22

2.  K1 x K22

3.  K12– K22

4.  K1/ K2

4

K1 x K22

Explanation :
No Explanation available for this question

# Assertion : A catalyst has no effect on the state of equilibrium Reason: A catalyst influences the rates of both forward and backward reactions t

1.  R is true A is false

2.  A is true R is false

3.  Both A and R are true and R is not correct explanation of A

4.  Both A and R are true and R is correct explanation of A

4

Both A and R are true and R is correct explanation of A

Explanation :
No Explanation available for this question

# Threshold energy (TE), internal energy of activation (AE) are related as

1.  TE = AE = IE

2.  IE = AE – TE

3.  TE = AE + IE

4.  AE= TE + IE]

4

TE = AE + IE

Explanation :
No Explanation available for this question

# What is the order of a reaction which has a rate expression rate = k[A]3/2 [B]-1

1.  2

2.  zero

3.  1/2

4.  3/2

4

1/2

Explanation :
No Explanation available for this question

# Chemisorption involves

1.  Bi-layered

2.  zero layered

3.  Uni layered

4.  Multi layered

4

Uni layered

Explanation :
No Explanation available for this question

# Which has minimum percent volume occupied by the spheres

1.  Cubic closest packed

2.  Hexagonal closest packed

3.  Body-centred cubic

4.  Simple cubic

4