# For the redox reaction Cr2O72+ + C2O42+ + H+ → Cr3+ + CO2 + H2O the correct coefficients of Cr2O7

1.  1,3,5

2.  2,6,10

3.  1,5,14

4.  1,3,14

4

1,3,14

Explanation :
No Explanation available for this question

# The hydrated salt Na2CO3xH2O undergoes 63% loss in mass on heating and becomes anhydrous. The value of x is

1.  10

2.  12

3.  8

4.  18

4

10

Explanation :
No Explanation available for this question

# The ratio of 2nd Bohr radil in He+ and Li2+ is

1.  3:2

2.  2:3

3.  1:3

4.  3:1

4

3:2

Explanation :
No Explanation available for this question

# A moving electron has 4.55 x 10-25 joules of kinetic energy. The wavelength of the electron is (mass = 9.1 x 10-31 kg and h = 6.6 x 10-34 kg m2 sec-1)

1.  7.25 x 10-7 cm

2.  7.25 x 10-7 m

3.  7.25 x 10-8 m

4.  6.25 x 10-7 cm

4

7.25 x 10-7 m

Explanation :
No Explanation available for this question

# Increasing the conc. of the reactant by 27 times, the rate increases by 3 times. What is the order of the reaction

1.  1

2.  1.33

3.  1/3

4.  2

4

1/3

Explanation :
No Explanation available for this question

# The RMS velocity of 8 gms ms-1.Total kinetic energy of He gas is

1.  120 j

2.  360 j

3.  240 j

4.  480 j

4

360 j

Explanation :
No Explanation available for this question

# The solubility of LiOH in a solution of pH = 8 = is Ksp = 1.8 x 10-12

1.  1.8 x 10-18

2.  1.8 x 10-6

3.  1.3 x 10-5

4.  1.8 x 10-4

4

1.8 x 10-6

Explanation :
No Explanation available for this question

# The vapour pressure of pure liquid A is 70 torr. At 270C is. It forms an ideal solution with another liquid B.The mole fraction of B is 0.2 and total pressure of the solution is 84 torr at 270C.The vapour pr

1.  14 torr

2.  56 torr

3.  140 torr

4.  70 torr

4

140 torr

Explanation :
No Explanation available for this question

# A 0.2 molal aqueous solution of a weak acid (HX) is 20 percent ionized. The freezing point of this solution is (Given Kf = 1.860C kg mol-1 for water)

1.  -0.450C

2.  -0.900C

3.  –0.310C

4.  -0.530C

4

-0.450C

Explanation :
No Explanation available for this question

# Three arrangements are shown for the complex [Co (en) NH(c)2Cl2]+. Pick up the wrong statement.

1.  I and II are geometrical isomers

2.  II and III are optical isomers

3.  I and III are optical isomers

4.  II and III are geometrical isomers

4