MCQs on Decomposition Reaction

MCQs on Decomposition Reaction: NEET Chemistry is considered to be the most scoring subject. As it is one of the easiest scoring subjects, it is often ignored and undermined a subject. But if you want to get an edge over others, here is a tip, master NEET Chemistry concepts. Chemistry demands the attention of students in understanding reactions and concrete basic understanding but once done it only gets easier from there. Mastering NCERT syllabus for NEET Chemistry should be topping your list of to-do for chemistry.

MCQs on Decomposition Reaction

 

Q1. The reaction 2Pb(NO₃)₂ → 2PbO + 4NO₂ + O₂ is a type of _______reaction.
a) displacement
b) double decomposition
c) decomposition
d) none of the above

Q2. On passing current to an acidified water we get hydrogen and oxygen. This is a type of
a) oxidation reaction
b) electrolysis
c) thermal decomposition
d) none of the above

Q3. The decomposition of silver chloride occurs by ________.
a) water
b) heat
c) electricity
d) sunlight

Q4. Ferrous sulphate on heating gives reddish-brown residue of ferric oxide. This is due to _____.
a) combination
b) displacement
c) decomposition
d) none of the above

Q5. How many moles of sodium carbonate is formed on decomposition of 0.2 moles of sodium bicarbonate?
a) 0.1
b) 0.2
c) 0.3
d) 0.4

Q6. Decomposition of hydrogen peroxide to give H₂O + O₂ is an example of ______.
a) reduction
b) oxidation
c) Both of these
d) None of these

Q7. Find out the volume of CO₂ liberated after heating 9.85 g of BaCO₃ at STP.
a) 1.12 l
b) 2.12 l
c) 2.06 l
d) 4.84 l

Q8. A reaction where two compounds exchange their atoms to form new compounds is called _____.
a) synthesis
b) displacement
c) decomposition
d) double displacement

Q9. CO₂ obtained by the complete decomposition of 20 g CaCO₃ at STP is _______.
a) 2.24 l
b) 4.48 l
c) 44.8 l
d) 48.4 l

Q10. The correct expression for decomposition of silver chloride to silver and chlorine is _____.
a) AgCl_2(s) → Ag_(s) + 2Cl_(g)
b) 2AgCl_(s)→ 2Ag_(s) + Cl_2(g)
c) AgCl_2(s) → Ag_(s) + Cl_2(g)
d) AgCl_(s) → Ag_(s) + Cl_(g)

 

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