26: The colour of a star is an indication of its
(a) distance from the sun
(b) luminosity
(c) distance from the earth
(d) temperature
27: Consider the following statements
1. Vardhaman Mahavira's mother was the daughter of Lichchhavi chief Chetaka.
2. Goutama Buddha's mother was a princess from the Kosha-lan dynasty.
3. Parshvanatha, the 23rd Tirthankara, belonged to Banaras.
Which of these statements is/are correct?
(a) Only 1
(b) Only 2
(c) 2 and 3
(d) 1, 2 and 3
28: Other than Venezuela, which one among the following from South America is a member of OPEC?
(a) Bolivia
(b) Argentina
(c) Brazil
(d) Ecuador
29: Recombinant DNA technology (Genetic Engineering) allows genes to be transferred
1. across different species of plants
2. from animals to plants
3. from micro organisms to higher organisms
Select the correct answer using the codes given below.
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
30: When a ship enters a sea from a river, its portion under water will:
(a) Increase
(b) Decrease
(c) Show no change
(d) Increase and decrease alternately