Chemistry - Online Test
Q1. C2H5
Br + 2Na 
→ C4H10 + 2NaBr
→ C4H10 + 2NaBr The above reaction is an example of which of the following
Answer : Option B
Explaination / Solution:
No Explaination.
Q2. Site for processing of vision, hearing, memory, speech, intelligence and thought is
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. An excess of silver nitrate is added to 100ml of a 0.01M solution of pentaaqua chloride chromium(III)chloride. The number of moles of AgCl precipitated would be
Answer : Option B
Explaination / Solution:
The complex is [M(H2O)5
Cl] Cl2
1000 ml of 1M solution of the
complex gives 2 moles of Cl− ions
1000 ml of 0.01M solution of the
complex will give
[100 ml x 0.01M x 2Cl-] /
[1000 ml x 1M] = 0.002 moles of C− ions
Q4. The hormone which has positive effect on apical dominance is:
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. The method by which aniline cannot be prepared is
Answer : Option B
Explaination / Solution:
No Explaination.
Q6. The
energy of light of wavelength 45 nm is
Answer : Option C
Explaination / Solution:
E = hν = hc/λ
=6.626 × 1034 J s × 3 ×108
m s1 / 45 ×109 m
= 4 .42 ×1018 J
Q7. Asexual reproduction takes place through budding in ___________ .
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. The effect of undesirable changes in the environment causing harm to living beings is termed as:
Answer : Option B
Explaination / Solution:
Environmental pollution is the harmful effect of undesirable changes caused by substances of chemical, biological or human origin.
Q9. 4d transition elements series are from
Answer : Option D
Explaination / Solution:
4d series arises from Y ( 4d15s2 )
Q10. An ionic compound AxBy
crystallizes in fcc type crystal structure with B ions at the centre of each
face and A ion occupying entre of the cube. the correct formula of AxBy is
Answer : Option B
Explaination / Solution:
number of A ions = (Nc/8) = (8/8)=1
number of B ions = (Nf/2) = (6/2) =3
