Part 1
Video Solution
Q.1 The atomic theory of matter was proposed by:
Q.2 The law of conservation of mass was given by:
Q.3 The law of constant proportions was given by:
Q.4 The scientist who proposed the letter (or first letter and another letter) of the Latin or English name of an element as its symbol, was:
Q.5 The symbol of a metal element which is used in making thermometers is:
Q.6 The Latin language name of an element is natrium. The English name of this element is:
Q.7 The English name of an element is potassium, its Latin name will be:
Q.8 The atoms of which of the following pair of elements are most likely to exist
in free state?
Q.9 One of the following elements has an atomicity of ‘one’. This element is:
Q.10 Which of the following elements has the same molecular mass as its atomic mass?
Part 2
Video Solution
Which of the following is used for determining the mass of a solid?
(a) Microscope
(b) Balance
(c) Thermometer
(d) Telescope
Ans b
Which element has neither a definite shape nor volume?
(a) Sodium
(b) Hydrogen
(c) Iodine
(d) Lithium
Ans b
Which of the following metals is NOT a solid at room temperature?
(a) Iron
(b) Aluminium
(c) Mercury
(d) Steel
Ans c
Which of the following will diffuse faster than the others?
(a) Water
(b) Petrol
(c) Perfume
(d) Milk
Ans c
Identify the normal temperature of the human body.
(a) 40⁰F
(b) 40⁰C
(c) 37⁰C
(d) 37⁰ F
Ans c
What is the SI..
unit of temperature?
(a) Centigrade
(b) Fahrenheit
(c) Kelvin
(d) All of the above
Ans c
What happens when ice is converted into water?
(a) Heat is absorbed
(b) Heat is released
(c) Temperature increases
(d) Temperature decreases
Ans a
Identify the freezing point of pure water,
(a) 60⁰C
(b) 100⁰C
(c) 10⁰C
(d) 0⁰C
Ans d
The temperature at which a solid substance
melts at atmospheric pressure is called its:
(a) Melting point
(b) Boiling point
(c) Ignition temperature
(d) Latent heat
Ans a
Which of the following is a mixture?
(a) Water
(b) Methane
(c) Mercury
(d) Solution of sugar and water
Ans d
In which one of the following states of matter, maximum movement of molecules is noticed?
(a) Solid (b) Liquid
(c) Gas (d) All the above
Ans c
0 Comments