Chemistry - Online Test
Q1. Benzene
reacts with Cl2 in the presence of FeCl3 and in absence
of sunlight to form
Answer : Option A
Explaination / Solution:
No Explaination.
Q2. The
correct order of electron gain enthalpy with negative sign of F, Cl, Br and I
having atomic number 9, 17, 35 and 53 respectively is
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. Living in the atmosphere of CO is dangerous because it
Answer : Option D
Explaination / Solution:
No Explaination.
Q4. The
cause of permanent hardness of water is due to
Answer : Option C
Explaination / Solution:
Permanent
hardness if water is due to the presence of the chlorides, nitrates and
sulphates of Ca2+ and Mg2+ ions.
Q5. In
which process, fused sodium hydroxide is electrolysed for extraction of sodium
?
Answer : Option A
Explaination / Solution:
Castner's process
NaOH ↔ Na+ + OH–
Cathode : Na+ + e– → Na
Anode : 2OH– → H2O + 1/2O2
+ 2e–
Q6. The
value of the gas constant R is
Answer : Option C
Explaination / Solution:
No Explaination.
Q7. KC/
KP for the reaction, N2(g) + 3H2(g) ⇌ 2NH3(g) is
Answer : Option D
Explaination / Solution:
for the reaction,
N2(g) + 3H2(g) ⇌ 2NH3(g) ;
Δng = 2 – 4 = – 2
∴ KP
= KC (RT)–2
Kc/Kp = (RT)2
Q8. C(diamond)
→ C(graphite), ∆H = –ve, this indicates that
Answer : Option A
Explaination / Solution:
No Explaination.
Q9. Which one of the following binary liquid mixtures exhibits positive deviation from Raoults law ?
Answer : Option D
Explaination / Solution:
Ethanol and water
Q10. When one s and three p orbitals hybridise,
Answer : Option B
Explaination / Solution:
Option (b) is correct Sp3 hybridisation.
Oribital geometry tetrahedron, bond angle 109º28'
