PG TRB Home science Online Test - 2

Question: 6

Which of the following is commonly called a polyamide?

(A) Terylene

(B) Orlon

(C) Rayon

(D) Nylon

Question: 7

Only ___ percent of earths water is fresh.

(A) 3

(B) 4

(C) 5

(D) 10

Question: 8

The image produced by the convex mirrors are

(A) Erect diminished virtual

(B) Inverted diminished virtual

(C) Erect diminished real

(D) Erect enlarged virtual

Question: 9

Bone matrix is rich in

(A) Phosphorus and potassium

(B) Calcium and potassium

(C) Calcium and phosphorus

(D) Fluoride and calcium

Question: 10

The shape of chromosome is clearly visible at

(A) Telophase

(B) Metaphase

(C) Anaphase

(D) Prophase