1921: Isotopes of the same element differ in the number of:

(a) Protons

(b) Neutrons

(c) Electrons

(d) Positrons
1922: The name of the poet Kalidasa is mentioned in the

(a) Allahabad pillar inscription

(b) Aihole inscription

(c) Alapadu grant

(d) Hanumakonda inscription
1923: Match rivers labelled A, B, C and D on the given map with their names given in the list and select the correct answer using the codes given below the list:

List I
1. St. Lawrence
2. Orinoco
3. Mackenzie
4. Amazon
5. Yukon


Codes:
(a) A-4, B-3, C-2, D-1
(b) A-5, B-3, C-1, D-2
(c) A-5, B-4, C-1, D-3
(d) A-3, B-1, C-4, D-2
1924: "Red Shirts" movement aimed at

(a) To throw out Britishers from India

(b) To promote Communist organisational activities

(c) To promote trade union activities

(d) All of the above
1925: As per 1991 Census, which one of the following groups of Union Territories had the highest literacy rate ?

(a) Chandigarh and Dadra & Nagar Haveli
(b) Delhi and Andaman & Nicobar Islands
(c) Andaman & Nicobar Islands and Pondicherry
(d) Pondicherry and Delhi