Chemistry - Online Test
Q1. IUPAC name of the complex K3
[Al ( C2O4 )3 ] is
Answer : Option D
Explaination / Solution:
No Explaination.
Q2. Which one of the following nitro compounds does not react with nitrous acid
Answer : Option C
Explaination / Solution:
3º nitroalkane
Q3. In calcium fluoride, having
the flurite structure the coordination number of Ca2+ ion and F- Ion
are
Answer : Option C
Explaination / Solution:
CaF2 has
cubical close packed arrangement
Ca2+ ions are
in face centered cubic arrangement, each Ca2+ ions is surrounded by 8 F− ions and each F−
ion is surrounded by 4 Ca2+ ions.
Therefore coordination
number of Ca2+ is 8 and of F− is 4
Q4. The central dogma of molecular genetics states that the genetic information flows from
Answer : Option C
Explaination / Solution:
No Explaination.
Q5. The decomposition of
phosphine (PH3) on tungsten at low pressure is a first order
reaction. It is because the
Answer : Option C
Explaination / Solution:
At low pressure the
reaction follows first order, therefore
Rate α [reactant]1
Rate α ( surface area )
At high pressure due to
the complete coverage of surface area, the reaction follows zero order.
Rate α[reactant]0
Therefore the rate is
independent of surface area.
Q6. Natural rubber has
Answer : Option C
Explaination / Solution:
No Explaination.
Q7. Which will make basic buffer?
Answer : Option C
Explaination / Solution:
Basic
buffer is the solution which has weak base and its salt
NH4OH(200ml) + HCl(100ml) →NH4Cl(Salt) + H2O + NH4OH (100ml
weak base)
Q8. Which of the following statements, about the advantage of roasting of sulphide ore before reduction is not true?
Answer : Option D
Explaination / Solution:
No Explaination.
Q9. Faradays constant is defined as
Answer : Option B
Explaination / Solution:
1F = 96500 C = charge of 1 mole
of e- =
charge of 6.022 ×1023 e−
Q10. The element that does not show catenation among the following p-block elements is
Answer : Option C
Explaination / Solution:
No Explaination.
