question_answer1) Which of the following elements is liquid at room temperature?
A) Argon done clear
B) Copper done clear
C) Mercury done clear
D) Calcium done clear
E) None of these done clear
View Solution play_arrowquestion_answer2) Which one of the following is not a matter?
A) Air done clear
B) Water done clear
C) Paper done clear
D) Smile done clear
E) None of these done clear
View Solution play_arrowquestion_answer3) Which one of the following statements is not correct about solid?
A) Solids have fixed shape done clear
B) Solids have fixed volume done clear
C) Solids can flow done clear
D) Solids have high densities done clear
E) None of these done clear
View Solution play_arrowquestion_answer4) Which one of the following statements is correct?
| Statement 1: In solids, molecules are tightly packed. |
| Statement 2: Force of attraction between molecules in solids is very weak. |
A) Statement 1 only done clear
B) Statement 2 only done clear
C) Both statements are correct done clear
D) Both statements are incorrect done clear
E) None of these done clear
View Solution play_arrowquestion_answer5) Which one of the following is correct about gas?
A) A gas does not have a fixed shape. done clear
B) A gas does not have fixed volume. done clear
C) A gas can be compressed easily. done clear
D) All the above done clear
E) None of these done clear
View Solution play_arrowA) Solid done clear
B) Liquid done clear
C) Gas done clear
D) All the above done clear
E) None of these done clear
View Solution play_arrowA) Melting point done clear
B) Boiling point done clear
C) Ignition temperature done clear
D) Latent heat done clear
E) None of these done clear
View Solution play_arrowquestion_answer8) Which one of the following statements is correct?
| Statements 1: Physical state of a substance can be changed by changing its temperature |
| Statement 2: Physical state of a substance can be changed by changing pressure |
A) Statement 1 done clear
B) Statement 2 done clear
C) Both statements are correct done clear
D) Both statements are incorrect done clear
E) None of these done clear
View Solution play_arrowquestion_answer9) Which one of the following statements is correct?
| Statement 1: If temperature of a solid substance is increased, the force of attraction between its molecules will also increase |
| Statement 2: If temperature of a solid substance is increased, the force of attraction between its molecules will decrease |
A) Statement 1 only done clear
B) Statement 2 only done clear
C) Both statements are correct done clear
D) Both statements are incorrect done clear
E) None of these done clear
View Solution play_arrowA) Solid done clear
B) Liquid done clear
C) Gas done clear
D) All the above done clear
E) None of these done clear
View Solution play_arrowquestion_answer11) Which of the following is a mixture?
A) Water done clear
B) Methane done clear
C) Mercury done clear
D) Solution of sugar and water done clear
E) None of these done clear
View Solution play_arrowquestion_answer12) Which of the following materials falls in the category of pure substances?
A) Air done clear
B) Mercury done clear
C) Muddy water done clear
D) Milk done clear
E) None of these done clear
View Solution play_arrowquestion_answer13) Which of the following is an example of metalloid?
A) Coal done clear
B) Coke done clear
C) Copper done clear
D) Boron done clear
E) None of these done clear
View Solution play_arrowquestion_answer14) Which of the following statements is incorrect for metal?
A) They are poor conductors of electricity. done clear
B) They are ductile. done clear
C) They are malleable. done clear
D) All the above done clear
E) None of these done clear
View Solution play_arrowquestion_answer15) Which of the following elements is a non-metal?
A) Mercury done clear
B) Potassium done clear
C) Carbon done clear
D) Calcium done clear
E) None of these done clear
View Solution play_arrowquestion_answer16) Which of the following is an example of suspension?
A) Solution of sugar and water done clear
B) Muddy water done clear
C) Milk done clear
D) Crystal of copper sulphate done clear
E) None of these done clear
View Solution play_arrowquestion_answer17) Which one of the following statements is correct?
A) Non-metals are generally hard. done clear
B) Non-metals have high tensile strength. done clear
C) Non-metals have low density. done clear
D) All the above done clear
E) None of these done clear
View Solution play_arrowquestion_answer18) Which of the following statements is incorrect?
A) A true solution is homogeneous mixture. done clear
B) Very small particles of the solution can scatter a beam of light. done clear
C) Solute particles of true solution cannot be separated from the mixture by the process of filtration. done clear
D) Particles of true solution cannot be seen with naked eyes. done clear
E) None of these done clear
View Solution play_arrowquestion_answer19) Which one of the following shows the process of electrophoresis?
A) True solution done clear
B) Colloid done clear
C) Suspension done clear
D) All the above done clear
E) None of these done clear
View Solution play_arrowquestion_answer20) Which one of the following is a liquid non-metal?
A) Gallium done clear
B) Bromine done clear
C) Lead done clear
D) Hydrogen done clear
E) None of these done clear
View Solution play_arrowquestion_answer21) Which one of the following statements is incorrect?
A) Increase in surface area, increases the rate of evaporation. done clear
B) Increase in temperature, increases the rate of evaporation. done clear
C) Increase in humidity, increases the rate of evaporation. done clear
D) Increase in wind speed, increases the rate of evaporation. done clear
E) None of these done clear
View Solution play_arrowquestion_answer22) Vapourisation takes place:
A) At all temperatures. done clear
B) At melting point of the liquid. done clear
C) At the boiling point of, the liquid. done clear
D) At the freezing point of the liquid. done clear
E) None of these done clear
View Solution play_arrowquestion_answer23) The process behind disappearing of nephthalene balls with time is known as:
A) Melting done clear
B) Condensation done clear
C) Sublimation done clear
D) Matter done clear
E) None of these done clear
View Solution play_arrowquestion_answer24) Why does a book is solid at room temperature?
A) It has fixed shape. done clear
B) It has fixed volume. done clear
C) It cannot flow. done clear
D) All the above done clear
E) None of these done clear
View Solution play_arrowA) Temperature done clear
B) Concentration done clear
C) Solvent done clear
D) Humidity done clear
E) None of these done clear
View Solution play_arrowA) 11.1% done clear
B) 9.01% done clear
C) 8% done clear
D) 10% done clear
E) None of these done clear
View Solution play_arrowA) 60% done clear
B) 38.88% done clear
C) 34% done clear
D) 88% done clear
E) None of these done clear
View Solution play_arrowquestion_answer28) A mixture of sand and iodine can be separated by:
A) Filtration done clear
B) Evaporation done clear
C) Sublimation done clear
D) Decantation done clear
E) None of these done clear
View Solution play_arrowquestion_answer29) Which one of the following is a colloid?
A) Cheese done clear
B) Ice cream done clear
C) Milk done clear
D) All the above done clear
E) None of these done clear
View Solution play_arrowquestion_answer30) Which of the following is heterogeneous in nature?
A) True solution done clear
B) Colloid done clear
C) Suspension done clear
D) Both [b] and [c] done clear
E) None of these done clear
View Solution play_arrowquestion_answer31) Drugs in blood can be separated by which of the following technique?
A) Filtration done clear
B) Paper Chromatography done clear
C) Distillation done clear
D) Threshing done clear
E) None of these done clear
View Solution play_arrowquestion_answer32) ____method is used to separate two miscible liquids.
A) Fractional distillation done clear
B) Magnetic separation done clear
C) Separating funnel done clear
D) Threshing done clear
E) None of these done clear
View Solution play_arrowquestion_answer33) Which one of the following substances does not undergo sublimation?
A) Ammonium chloride done clear
B) Iodine done clear
C) Dry ice done clear
D) Ice done clear
E) None of these done clear
View Solution play_arrowquestion_answer34) In which of the following colloids the dispersion medium is solid?
A) Whipped Cream done clear
B) Marshmallow done clear
C) Paint done clear
D) Mayonnaise done clear
E) None of these done clear
View Solution play_arrow| (i) The components must differ in their boiling points atleast by\[{{15}^{o}}C\]. |
| (ii) The components must have same boiling points. |
| (iii) The components must be miscible with each other. |
| (iv)The components, must be immiscible with each other. |
A) (i) and (ii) done clear
B) (ii) and (iii) done clear
C) (i) and (iv) done clear
D) (i) and (iii) done clear
E) None of these done clear
View Solution play_arrowquestion_answer36) Which one of the following is an example of aerosol?
A) Rubber sponge done clear
B) Ruby done clear
C) Cloud done clear
D) Ink done clear
E) None of these done clear
View Solution play_arrowquestion_answer37) Which one of the following will give a true solution when dissolved in water?
A) Chalk done clear
B) Sand done clear
C) Sugar done clear
D) Starch done clear
E) None of these done clear
View Solution play_arrowquestion_answer38) Tincture of iodine refers to:
A) Iodine dissolved in milk done clear
B) Iodine dissolved in ethanol done clear
C) Iodine dissolved in copper sulphate solution done clear
D) Iodine dissolved in common salt. done clear
E) None of these done clear
View Solution play_arrowquestion_answer39) A mixture of water and benzene can be separated by using:
A) Filtration methods done clear
B) Separating funnel methods done clear
C) Centrifugation method done clear
D) Chromatography done clear
E) None of these done clear
View Solution play_arrowA) Paper chromatography done clear
B) Centrifugation done clear
C) Decantation done clear
D) Separating funnel done clear
E) None of these done clear
View Solution play_arrow
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