# Assertion (A) :   White tin is an example of tetragonal system.Reasoning (R) : For a tetragonal system a = b = c and α = β = γ≠ 900 The corre

1.  (A) and (R) are true and (R) is the correct explanation of (A)

2.  Both (A) and (R) are true and (R) is not the correct explanation (A)

3.  (A) is true but (R) is not true

4.  (A) is not true but (R) is true

4

(A) is true but (R) is not true

Explanation :
No Explanation available for this question

# What is the slope of the straight line for the graph drawn between In k and 1/T where k is the rate constant of a reaction at temperature T

1.  R/Eα

2.  Eα/R

3.  -Eα/R

4.  -Eα/2.303R

4

-Eα/R

Explanation :
No Explanation available for this question

# If the equilibrium constant for the reaction is   H2(g) + I2(g).↔2HI(g) is K.what is the equilibrium constant of HI(g)↔1/2H2(g)+1/2I2(g)

1.  5/4MR2

2.  1/4MR2

3.  3/4MR2

4.  1/2MR2

4

5/4MR2

Explanation :
No Explanation available for this question

# The pH of 0.01 M solution of acetic acid is 5.0. What are the values of [H+] and K∞ respectively

1.  1 x 10-5 M, 1 x l0-8

2.  1 x 10-5 M, 1 x l0-9

3.  1 x 10-4 M, 1 x 10-8

4.  1 x 10-3 M, 1 x l0-8

4

1 x 10<sup>-5</sup> M, 1 x l0<sup>-8</sup>

Explanation :
No Explanation available for this question

# A system is provided with 50 Joules of heat and the work done on the system is 10 Joules. What is the change in internal energy of the system in Joules

1.  60

2.  40

3.  50

4.  10

4

60

Explanation :
No Explanation available for this question

# A micelle formed during the cleansing action by soap is :

1.  A discrete particle of soap

2.  Aggregated particles of soap and dirt

3.  A discrete particle of dust

4.  An aggregated particle of dust and water

4

Aggregated particles of soap and dirt<br>

Explanation :
No Explanation available for this question

# The orange colored compound formed when H2O2 is added to TiO2 solution acidified with cone. H2SO4 is

1.  H2TiO4

2.  H2TiO3

3.  H2Ti2O8

4.  Ti2O3

4

H2TiO4

Explanation :
No Explanation available for this question

# Solvay process is used in the manufacture of :

1.  K2CO3

2.  KHCO3

3.  Na2CO3

4.  CaCl2

4

Na<sub>2</sub>CO<sub>3</sub>

Explanation :
No Explanation available for this question

# Diborane reacts with ammonia under different conditions to give a variety ofproducts. Which one among the following is not formed in these reactions

1.  B2H6.2NH3

2.  B12H12

3.  B3N3H6

4.  (BN)n

4

B<sub>12</sub>H<sub>12</sub>

Explanation :
No Explanation available for this question

1.  galena

2.  cerussite

3.  cassiterite

4.  anglesite

4