Chemistry · Science General

States of Matter

2,382 Questions

States of matter questions explore physical changes, evaporation, phase transitions, and the properties of liquids and gases. Topics cover density, cryosurgery, heavy water, and electrolytes. This foundational chemistry topic frequently appears in general science sections of SSC and railway exams.

Phase change mechanismsEvaporation and temperature effectsProperties of liquidsPhysical versus chemical changesElectrolytes and heavy water

States of Matter Questions

Multiple choice physics forces and matter pressure in fluids pressure in liquids introduction to pressure
Which of the following can exert pressure

  1. Solids

  2. Liquids

  3. Gases

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A fluid is a substance that has no fixed shape and yields easily to external pressure; a gas or  a liquid.

Pressure is exerted by fluids because of their weight. Static fluid pressure is exerted by the depth of the fluid, the density of the fluid and the acceleration of gravity.
Well knowingly, the solids exert pressure on the surface on which they are placed, given by $P=\dfrac{mg}{A}$
Hence correct answer is option D.

Multiple choice physics forces and matter pressure in fluids pressure in liquids introduction to pressure

Which of the following is true?

  1. Fluid do not have any weight

  2. Only liquids have weight

  3. Only gases have weight

  4. Fluids have weight
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A fluid is a substance that has no fixed shape and yields easily to external pressure; a gas or  a liquid.

Pressure is exerted by fluids because of their weight. Static fluid pressure is exerted by the depth of the fluid, the density of the fluid and the acceleration of gravity.

Multiple choice physics forces and matter pressure in fluids pressure in liquids introduction to pressure

Fill in the blank.

Liquids exerts pressure in _______ directions.

  1. One

  2. Two

  3. All

  4. It do not extent any pressure
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Like solids fluids (liquids and gases) also exent pressure. A solid exent pressure only in the downward direction due to its weight, whereas liquids and gases exent pressure on the walls of their container.

Multiple choice physics forces and matter pressure in fluids pressure in liquids introduction to pressure
Fluids are

  1. The substances which are lighter than air.

  2. The substances which let substances float on them.

  3. The substances which can flow easily.

  4. Liquids.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A fluid is a substance such as liquid or gas which can flow easily, has no fixed shape and can changes its shape at a steady rate when acted upon by a force tending to change its shape.

Multiple choice physics forces and matter pressure in fluids pressure in liquids introduction to pressure
Mark the most common fluids

  1. Air

  2. Water

  3. Kerosene

  4. Both A and B are considered as most common fluids
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A fluid is a substance such as liquid or gas which can flow easily, has no fixed shape and can changes its shape when acted upon by a force tending to change its shape.
Air is the most common mixture of gas.
Water is the most common liquid present on earth.
Hence correct answer is option D.
Multiple choice physics force and pressure pressure in fluids pressure in liquids introduction to pressure

Fluids include

a) Solids    
b) Liquids  
c) Gases

  1. a and b

  2. b and c

  3. a and c

  4. All the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A fluid is a substance that has no fixed shape and yields easily to external pressure; a gas or  a liquid, or, which can easily flow.

It is due to this property of variation of pressure along a fluid that it exerts a buoyant force on a body placed inside it. 

Multiple choice chemistry water too little to waste pollution of water water pollution planet earth

According to The United States Geological Survey, water having less than 1000 mg/litre of total dissolved solids is:

  1. fresh water

  2. slightly saline

  3. moderately saline

  4. brine water
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Fresh water is naturally occurring water on Earth's surface in ice sheets, ice caps, glaciers, icebergs, bogs, ponds, lakes, rivers and streams, and underground as groundwater in aquifers and underground streams.

The definition of freshwater according to The United States Geological Survey is water containing less than 1,000 milligrams per liter of dissolved solids, most often salt.

Multiple choice chemistry mix and separate different types of mixtures homogenous and heterogenous mixtures all about mixtures

Salt, sugar, and many other substances dissolve in water to form :

  1. homogenous mixture

  2. heterogenous mixture

  3. Ionic compound

  4. molecular compound
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A mixture is a material system made up of two or more different substances which are mixed but are not combined chemically. A homogeneous mixture is a type of mixture in which the composition is uniform and every part of the solution has the same properties. Salt, sugar, and many other substances dissolve in water to form homogeneous mixtures.

Multiple choice chemistry mix and separate different types of mixtures homogenous and heterogenous mixtures all about mixtures

Which of the following is a homogeneous solution?

  1. Muddy water

  2. Bread

  3. Concrete

  4. A solution of sugar in water
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The solution in which the concentration of solute is the same in every part of the solution is known as a homogeneous solution, sugar is completely soluble in water and forms homogeneous solution.