[1 Mark Question Answer]

Question 11 Mark

What are isobars?

Answer

The atoms of different elements having same mass number but different atomic number are called isobars.

Question 21 Mark

Do isotopes have same chemical or physical properties?

Answer

Isotopes have same chemical properties but have different physical properties.

Question 31 Mark

What are isotopes?

Answer

The atoms of same elements having the same atomic number Z but different mass number A are called isotopes.

Question 41 Mark

Which of the radiations α, β and γ is similar to a beam of electrons?

Answer

β radiations are similar to a beam of electrons.

Question 51 Mark

What do you mean by Atomic mass

Answer

Atomic mass of element is the relative mass of its atom as compared to the mass of carbon atom taken as 12.

Question 61 Mark

What do you mean by Mass number.

Answer

Mass number is the sum of protons and neutrons present in the nucleus.

Question 71 Mark

Define nucleus.

Answer

Nucleus is central part of an atom which consist of elementary particles protons and neutrons.

Question 81 Mark

In what way are these numbers related to the isotopes of an element?

Answer

Isotopes have same number of atomic number and different number of
atomic masses.

Question 91 Mark

What is the meaning of mass number?

Answer

Mass number is the sum of protons and neutrons present in the nucleus.

Physics [1 Mark Question Answer]