Practice Test


Q1) A physical change can Show Answer


Q2) 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


Q3) A chemical change is always accompanied by Show Answer


Q4) Which of the following is a physical change ? Show Answer


Q5) Which one of the following is not a chemical change ? Show Answer


Q6) An exothermic reaction is accompanied by Show Answer


Q7) An endothermic reaction is accompanied by Show Answer


Q8) Which of the following represents a chemical change ? Show Answer


Q9) Combustion of a candle is a/an Show Answer


Q10) Which of the following represents a chemical reaction ? Show Answer


Q11) All three physical states of matter differ in Show Answer


Q12) A physical change can Show Answer


Q13) Which of the following is a physical change ? Show Answer


Q14) A substance (X) dissolves in water with a decrease in volume and absorption of heat, solubility of x will be favoured by Show Answer


Q15) Which one of the following is a chemical change ? Show Answer


Q16) Evaporation of water at room temperature is Show Answer


Q17) If a refrigerator's door is opened, we get Show Answer


Q18) The relationship which describes the variation of vapour pressure with temperature is called Show Answer


Q19) Almost all thermal dissociation reactions are Show Answer


Q20) Which of the following reaction is endothermic ? Show Answer


Q21) During melting of a solid, there is increase in Show Answer


Q22) In a chemical reaction, equilibrium is said to have been established when the Show Answer


Q23) Which of the following is intensive property ? Show Answer


Q24) Enthalpy change of a reaction does not depend upon : Show Answer


Q25) Which of the following results in decrease in entropy ? Show Answer


Q26) In which of the following cases cooking is very slow ? Show Answer


Q27) The bulb of a thermometer is dipped in petrol and then taken out. The level of mercury thread in the thermometer Show Answer


Q28) 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


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


Q30) Which of the following is a chemical change ? Show Answer


Q31) Heating of a substance result in Show Answer


Q32) Which of the following is a physical change ? Show Answer


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


Q34) Which of the following is not a chemical change ? Show Answer


Q35) Which of the following is always accompanied during a chemical change ? Show Answer


Q36) An endothermic reaction is accompanied by Show Answer


Q37) Which of the following is a physical change ? Show Answer


Q38) Combustion of a candle is a/an Show Answer


Q39) Which of the following substances undergo chemical changes on heating ? Show Answer


Q40) 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


Q41) 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


Q42) STATEMENT I :
Emission of light from stars is a chemical change.
STATEMENT II :
Source of light from stars is nuclear fission reactions. Show Answer


Q43) 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


Q44) Which one among the following is a chemical process ? Show Answer


Q45) 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


Q46) Which among the following is a chemical change ? Show Answer


Q47) Which one among the following is not a chemical change ? Show Answer