Everyday Science Mcqs

A. C2H6O
B. CaSO4
C. C2H4O2
D. H2SO4

A. Giorgi
B. Archimedes
C. Eienstein
D. Newton

The M.K.S. system was first introduced Giorgi.
M stands for meters.
K stands for kilograms.
S stands for seconds.
These three units work together with various equations. They are three basic units within the SI system. Many other units can be described using those three units. For example, a Newton (unit of force) is a kg m/s^2. A kilogram multiplied by a meter divided by seconds squared.

A. Chromatography
B. Fractional distillation
C. Sublimation
D. None of these

mixture of sand and naphthalene can be separated by “Sublimation”.

A. Na3CO2
B. CNa2O3
C. Na2CO3
D. Na3CO3

A. Turmeric on filter paper
B. Silica gel coated with silver nitrate
C. potassium permanganate-sulphuric acid
D. Potassium dichromatic-sulphuric acid

A. Carbon dioxide
B. Oxygen
C. Nitrogen
D. Hydrogen sulphide

A. Nuclear fusion
B. Artificial radioactivity
C. Natural radioactivity
D. Nuclear fission

A. Isotopes
B. Isomers
C. Allotropes
D. Allomers

Atoms which have the same number of protons but different numbers of neutrons in the nucleus are known as isotopes. Because of the difference in the number of neutrons, they will have the same atomic number, but varying atomic mass (or mass number).

A. M
B. Z
C. P
D. A

The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus. In an uncharged atom, the atomic number is also equal to the number of electrons.

A. Ammonia Gas
B. Chlorine
C. Oxygen
D. Hydrogen gas

 
When metal reacts with acid, a soap bubble is formed and the bubble contains Hydrogen gas (example: HCl, H2SO4).
Hydrogen gas is liberated when anacid reacts with a metal. For example, when zin cmetal reacts with dil. hydrogen is evolved and salt zinc chloride is formed as: It can be tested bybringing a burning candle near thegas.