Chemistry Test 125

Result

Chemistry Test 125

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

Calculate the correct increasing order of average oxidation number of sulphur in :

S₈,S₂O₃^2–, S₂O₇^–2, S₄O₆^–2, SO₃^–2 :-

A
S₈ <

B

C

D

Solution
Question 2
4 / -1

Directions For Questions

The van der Waals parameters for gases W, X, Y and Z are :

Gas a (atm L² mol^-2) b (L mol^-1)

W 4.0 0.027

X 8.0 0.030

Y 6.0 0.032

Z 12.0 0.027

...view full instructions

Which one of these gases has the highest critical temperature ?

A
W

B
X

C
Y

D
Z

Solution
Question 3
4 / -1

What is ionic percentage of XY, where E.N. value of X = 2.1 and Y = 3.0 :-

A
20

B
30

C
17

D
23

Solution

% I.C. = 16 (ΔEN) + 3.5 (ΔEN)²
Question 4
4 / -1

The geometry of XeO₂F₂ is :–

A
Triangular planar

B
Trigonal bipyramidal

C
Square planar

D
Tetrahedral

Solution
Question 5
4 / -1

Select the incorrect statement in following :-

A
Cyano complex are used for electro plating of Au.

B
[EDTA]^4– is used for estimation of hardness of water

C
AgCl ppt is insoluble in ammonia or NH₄OH.

D
All are incorrect
Question 6
4 / -1

Correct dipole moment order is :-

A
A, B, C, E

B
A, B, C, F

C
B, C, E, F

D
C, D, E, F
Question 7
4 / -1

Which of the following have maximum thermal stability ?

A
BeCO₃

B
MgCO₃

C
CaCO₃

D
BaCO₃

Solution

Large part
Question 8
4 / -1

Select the correct order of 2^nd I.P. of C,N,O,F :-

A
C > N > O > F

B
F > O > N > C

C
O > F > N > C

D
C > O > N > F

Solution

C⁺ N⁺ O⁺ F⁺

2p¹ 2p² 2p³ 2p⁴

IF₂ ⇒ C⁺ < N⁺ < F⁺ < O⁺
Question 9
4 / -1

Charcoal is obtained by :

A
Heating coal in asbence of air

B
Heating wood in absence of air

C
Heating hydrocarbon in presence of air

D
By coal gasification
Question 10
4 / -1

Which of the following elements may show an effective isotopic effect ?

A
Oxygen

B
Nitrogen

C
Chlorine

D
Hydrogen

Solution

Only for Hydrogen (due to large difference in mass)