Chemistry Mcqs Set 60

Chemistry Mcqs Set 60

1. For the reaction taking place in solution, A B, the rate of reaction is expressed as ................
(i) d[A]/dt                
(ii) –d[A]/dt                     
(iii) –d[B]/dt                   
(iv) –d[A]/d[B]
 
2. During a chemical reaction which takes place in solution, .........................
(i) the concentration of the reactant increases
(ii) the concentration of the product decreases
(iii) the concentration of the reactant does not change
(iv) the concentration of the reactant decreases
 
3. Choose the correct statement ........................
(i) magnesium ribbon reacts faster in hydrochloric acid
(ii) magnesium ribbon reacts faster in acetic acid
(iii) magnesium ribbon reacts slower in hydrochloric and faster in acetic acid
(iv) hydrogen gas is involved at the same rate when magnesium ribbon is allowed to react separately with hydrochloric acid and acetic acid
 
4. In which of the following , the rate of reaction is faster?
(i) dissolution of calcium carbonate in hydrochloric acid at room temperature
(ii) dissolution of calcium carbonate in hydrochloric acid at 40oC
(iii) dissolution of calcium carbonate in dilute hydrochloric acid at 40oC
(iv) all the above
 
5. Choose a pair of monobasic acids ....................
(i) HCl and HNO3                              
(ii) H2SO4 + H2CO3
(iii) H3PO4 and H2SO4                     
(iv) CH3COOH+H2SO4
 
6. Consider acetic acid and hydrochloric acid. Choose the correct statement.
(i) both acetic and hydrochloric acids are strong acids
(ii) both acetic and hydrochloric acids are weak acids
(iii) acetic acid is a stronger acid than hydrochloric acid
(iv) hydrochloric acid is a stronger acid than acetic acid
 
7. The basicity of sulphuric acid and phosphoric acids are ..............
(i) 1 and 2                
(ii) 2 and 3                         
(iii) 1 and 3                   
(iv) 2 and 4
 
8. You have two solutions of hydrochloric acid solution A contains 36.5 g of hydrochloric acid is one litre of the solution. Solution B contains 3.65g hydrochloric acid is one litre of the solution. Among solution A and B ...................
(i) A is a stronger acid than B               
(ii) B is a stronger acid than A
(iii) Both are equally strong                   
(iv) A is a weaker acid than B
 
9. Select a mineral acid among the following ...................
(i) acetic acid             
(ii) citric acid    
(iii) hydrochloric acid                 
(iv) lactic acid
 
10. Which of the following react with hydrochloric acid but not with sodium hydroxide?
(i) calcium oxide, ammonium hydroxide             
(ii) sodium oxide, carbon-di-oxide
(iii) sodium oxide, ammonium hydroxide          
(iv) Sodium oxide, magnesium hydroxide