Tag: nature of things

Quizzes (10) Questions (75)

Questions Related to nature of things

Multiple choice chemistry nature of things objects around us different types of materials materials around us and importance of grouping

Who was the scientist to make attempts for giving explanatory definition of element?

  1. Rontgen

  2. Dalton

  3. Rutherford

  4. Laveziour
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rontgen discovered X-rays.
Dalton proposed the postulates of Atomic Theory.
Rutherford discovered $\alpha$ and $\beta$ and also [performed the Gold-foil experiment for the discovery of the nucleus.
Laveziour attempted to give the explanatory definition of elements and stated that element is the basic unit of substance.

Multiple choice chemistry nature of things objects around us different types of materials materials around us and importance of grouping

Identify which group of objects are made from the same material.

  1. Comb, hairclip, water bottle and shoes

  2. Shoes, brief-case, belts and flower pot

  3. Car, bike, bicycle and ship

  4. Shirts, night suits, bed-sheets and mirrors
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The option $C$ contain the objects made up of by same material that is plastic .

Multiple choice chemistry nature of things objects around us different types of materials materials around us and importance of grouping

Which of the following object(s) are made from plastic?

  1. Bucket

  2. Table

  3. Plate (thali)

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

Plastic is a very useful polymer. It is used on a large scale for production of various articles. Buckets, tables, plates, chairs, bottles are few examples of articles made of plastic. Hence answer is option D.

Multiple choice chemistry nature of things objects around us different types of materials materials around us and importance of grouping

Which of the following object(s) are made from steel?

  1. Cupboard

  2. Table

  3. Chair

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

Steel is an important alloy of ions that is used on a very large scale in modern industry due to its high durability and strength. It is also used to manufacture tables, chairs, cupboards, fans, utensils,etc. Thus answer is option D.

Multiple choice chemistry nature of things objects around us different types of materials materials around us and importance of grouping

Which of the following is called as dry ice

  1. Solid $CO _2$
  2. Solid $NO _2$
  3. Solid $SO _2$
  4. $CO _2$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Solid carbon dioxide is called dry ice. Because it looks like ice and because when it melts (it actually sublimes) it goes from solid straight to gas, no liquid, hence dry ice.
Hence option A is correct.

Multiple choice chemistry nature of things objects around us different types of materials materials around us and importance of grouping

Electric wires, coils, and machines are made of metals. Which of the following metal cannot be used for them?

  1. copper

  2. silver

  3. iron

  4. sodium
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Electric wires, coils and machines are made of hard metals. Sodium is a very soft metal which can be cut through knife hence it cannot use to prepare electric wires, coils and machines.

Multiple choice evs nature of things properties of materials grouping and classification of objects sorting materials into groups

The density of alcohol is 800 $ \displaystyle Kg/m^{3} $. Its relative density is:

  1. 8

  2. 0.8

  3. 0.08

  4. 800
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Relative density is the ratio of the density of the substance to the density of water.

We know that, density of water is $1 gm/cm^3   = 10^3 kg/m^3$

So, relative density of alcohol = $\dfrac{800}{1000}$ = $0.8$

Hence, option B is correct.
Multiple choice chemistry nature of things properties of materials grouping and classification of objects sorting materials into groups

Solubility is the amount of the .................... present in the saturated solution at a particular temperature.

  1. solute

  2. solvent

  3. dispersed phase

  4. dispersed medium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

At any particular temperature, a solution that has dissolved as much solute as it is capable of dissolving, is said to be a saturated solution. In other words, when no more solute can be dissolved in a solution at a given temperature, it is called a saturated solution. The amount of the solute present in the saturated solution at this temperature is called its solubility.

Multiple choice chemistry nature of things properties of materials grouping and classification of objects sorting materials into groups

The amount of the solute present in the saturated solution at a particular temperature is called its :

  1. solubility

  2. saturation

  3. solvent concentration

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

At any particular temperature, a solution that has dissolved as much solute as it is capable of dissolving is said to be a saturated solution.


The amount of solute present in the saturated solution at this temperature is called its solubility.

Hence, option A is correct.