States of Matter JEE Mains Questions. We covered all the States of Matter JEE Mains Questions in this post for free so that you can practice well for the exam.
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Mock Test on States of Matter for JEE Students
Water boils at a lower temperature at high altitudes, because
(a) the air pressure is less
(b) the outside temperature is less
(c) the latent heat is less
(d) None of the above
Option a – the air pressure is less
Which of the following has the lowest melting point?
(a) Lead
(b) Zinc
(c) Silver
(d) Tin
Option d – Tin
The absolute zero, i.e. temperature below which is not achievable, is about
(a) 0°C
(b) -273 K
(c) -273°C
(d) -300°C
Option c – -273°C
Which one of the following is used as an anti-freeze, which effectively depresses the freezing point of water in an automobile?
(a) Ethylene glycol
(b) Propanoic acid
(c) Glutamic acid
(d) Glycolic acid
Option a – Ethylene glycol
In the winter season especially in cold countries, ethylene glycol is added to water in the radiators of cars. It results in
(a) reducing the viscosity of water.
(b) lowering the freezing point of water.
(c) lowering the boiling point of water.
(d) reducing the specific heat of the water.
Option b – lowering the freezing point of water
The temperature to which a gas must be cooled before it can be liquefied by compression is called
(a) Boyle’s temperature
(b) critical temperature
(c) liquefaction temperature
(d) inversion temperature
Option b – critical temperature
Which one of the following could be the melting point of iron?
(a) 25°C
(b) 37°C
(c) 500°C
(d) 1500°C
Option d – 1500°C
Consider the following statements. I. A real gas can be approximated as an ideal gas when it is highly dilute. II. Only monoatomic gases can be approximated as ideal gases. III. An ideal gas does not undergo phase transitions. Which of the above statements is correct?
(a) I and II
(b) I and III
(c) II and III
(d) I, II and III
Option b – I and III
The temperature of a place on one sunny day is 113 in Fahrenheit scale. The Kelvin scale reading of this temperature will be
(a) 318 K
(b) 45 K
(c) 62.8 K
(d) 335.8 K
Option a – 318 K
Why do two ice blocks join to form one block when pressed together?
(a) The melting point of ice is lowered with an increase in pressure.
(b) The melting point of ice increases with an increase in pressure.
(c) The melting point of ice remains unchanged with an increase in pressure.
(d) The melting point of ice is 0°C.
Option a – The melting point of ice is lowered with an increase in pressure
The process of change from liquid to gas is called ……
(a) precipitation
(b) vaporization
(c) decantation
(d) condensation
Option b – vaporization
Rate of evaporation increases with
(a) an increase in surface area.
(b) an increase in humidity.
(c) a decrease in wind speed.
(d) a decrease in temperature.
Option a – an increase in surface area
A liquid is kept in a glass beaker. Which one of the following statements is correct regarding the pressure exerted by the liquid column at the base of the beaker?
(a) The pressure depends on the area of the base of the beaker.
(b) The pressure depends on the height of the liquid column.
(c) The pressure does not depend on the height of the liquid column.
(d) The pressure neither depends on the area of the base of the beaker nor on the height of the liquid column.
Option b – The pressure depends on the height of the liquid column
Consider the following statements. I. When evaporation takes place, cooling takes place. II. Evaporation takes place at all temperatures, and boiling takes place only at the boiling point. III. Evaporation is a surface phenomenon. Which of the statements given above is/are true?
(a) Only I
(b) I and II
(c) II and III
(d) I, II, and III
Option d – I, II, and III
The following properties will decrease with an increase in temperature except?
(a) Surface
(b) Vviscosity
(c) Density
(d) Vapour pressure
Option d – Vapour pressure
A pressure cooker works on the principle of
(a) elevation of the boiling point of water by application of pressure.
(b) making the food grains softer by the application of pressure.
(c) making the food grains softer by the application of pressure and temperature.
(d) keeping the food grains inside steam for a longer time.
Option a – elevation of the boiling point of water by application of pressure
Which chemical law proposes that ‘soft drinks and soda bottles are sealed under high pressure to increase the solubility of CO₂?
(a) Raoult’s Law
(b) Henry’s Law
(c) Ohm’s Law
(d) Dalton’s Law
Option b – Henry’s Law
Ammonia (NH3) obtained from different sources always has the same proportion of nitrogen and hydrogen. It proves the validity of the law of
(a) Reciprocal proportion
(b) Constant proportion
(c) Multiple proportions
(d) None of the above.
Option b – Constant proportion
Assertion (A) All molecules of an ideal gas move with the same speed. Reason (R) There is no attraction between the molecules in an ideal gas. Codes
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Option c – A is true, but R is false
We covered all the states of matter jee mains questions above in this post for free so that you can practice well for the exam.
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