Practice Test

Q1) A physical change can Show Answer

Q2) A chemical change is always accompanied by Show Answer

Q3) Which of the following is a physical change ? Show Answer

Q4) Which one of the following is not a chemical change ? Show Answer

Q5) An exothermic reaction is accompanied by Show Answer

Q6) An endothermic reaction is accompanied by Show Answer

Q7) Which of the following represents a chemical change ? Show Answer

Q8) Combustion of a candle is a/an Show Answer

Q9) Which of the following represents a chemical reaction ? Show Answer

Q10) All three physical states of matter differ in Show Answer

Q11) A substance (X) dissolves in water with a decrease in volume and absorption of heat, solubility of x will be favoured by Show Answer

Q12) Which one of the following is a chemical change ? Show Answer

Q13) Evaporation of water at room temperature is Show Answer

Q14) If a refrigerator's door is opened, we get Show Answer

Q15) The relationship which describes the variation of vapour pressure with temperature is called Show Answer

Q16) Almost all thermal dissociation reactions are Show Answer

Q17) Which of the following reaction is endothermic ? Show Answer

Q18) During melting of a solid, there is increase in Show Answer

Q19) In a chemical reaction, equilibrium is said to have been established when the Show Answer

Q20) Which of the following is intensive property ? Show Answer

Q21) Enthalpy change of a reaction does not depend upon : Show Answer

Q22) Which of the following results in decrease in entropy ? Show Answer

Q23) In which of the following cases cooking is very slow ? Show Answer

Q24) The bulb of a thermometer is dipped in petrol and then taken out. The level of mercury thread in the thermometer Show Answer

Q25) Any change in matter that results in the disappearance of one or more substances and the appearance of one or more substances, each having its own set of intensive properties is known as Show Answer

Q26) Which of the following is a chemical change ? Show Answer

Q27) Which of the following is a chemical change ? Show Answer

Q28) Heating of a substance result in Show Answer

Q29) Which of the following is a physical change ? Show Answer

Q30) Which of the following is a true statement about the physical change ? Show Answer

Q31) Which of the following is not a chemical change ? Show Answer

Q32) Which of the following is always accompanied during a chemical change ? Show Answer

Q33) Which of the following is a physical change ? Show Answer

Q34) Which of the following substances undergo chemical changes on heating ? Show Answer

Q35) ASSERTION (A) :
When mixture of iron and sulphur is heated, it is a physical change.
REASON (R) :
Mixture of iron and sulphur cannot be separated by running a magnet over it. Show Answer

Q36) ASSERTION (A) :
Cutting of carrot into pieces is a chemical change.
REASON (R) :
Pieces of carrot through physically differ from the original carrot but are chemically same. Show Answer

Q37) STATEMENT I :
Emission of light from stars is a chemical change.
STATEMENT II :
Source of light from stars is nuclear fission reactions. Show Answer

Q38) STATEMENT I :
Conversion of blue copper sulphate to black cupric oxide on heating is a physical change.
STATEMENT II :
A change in which chemical composition does not change is called physical change. Show Answer

Q39) Which one among the following is a chemical process ? Show Answer

Q40) Which of the following represent a chemical change ?
(I) Magnetisation of iron
(II) Condensation of liquid
(III) Burning of fuel
(IV) Rusting of iron
Select the correct answer using the code given below : Show Answer

Q41) Which among the following is a chemical change ? Show Answer

Q42) Which one among the following is not a chemical change ? Show Answer