1556: Neutron was discovered by:
(a) Ouo Hahn
(b) Enrico Fermi
(c) Lise Meitner
(d) James Chadwick
1557: Gypsum is added to cement clinker to
(a) Increase the tensile strength of the cement
(b) Bind the particles of calcium silicate
(c) Decrease the rate of setting of cement
(d) Facilitate the formation of colloidal gel
1558: Assertion (A): Muhammad bin Tughlaq issued a new gold coin which was called Dinar by Ibn Batutah.
Reason (R) : Muhammad bin Tughlaq wanted to issue token currency in gold coins to Promote trade with West Asian and North African countries.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not the correct explanation of A
(c) A is true but R is false
(d) A is false but R is true
1559: What is the common feature in insects like ant and cockroach?
(a) They bite and chew their food
(b) They live in temperate climate conditions
(c) They have cutting and sucking type of mouth parts
(d) They are social insects
1560: The great philosopher Shankara advocated:
(a) Dvaita
(b) Advaita
(c) Hinduism
(d) Altruism