Q. Deficiency of Vitamin-D results in
(A) night blindness
(B) rickets
(C) scurvy
(D) hair fall
The answer is: (B) rickets ☑
Q. The SI unit of “pressure” is
(A) pascal
(B) joule
(C) tesla
(D) henry
The answer is: (A) pascal ☑
Q. The most densest substance on the Earth is
(A) Platinum
(B) Copper
(C) Steel
(D) Osmium
The answer is: (D) Osmium ☑
Q. A camera uses a __________ to form an image.
(A) convex lens
(B) concave lens
(C) condenser lens
(D) none of these
The answer is: (A) convex lens ☑
Q. Which from the following is NOT a conductor?
(A) Aluminum
(B) Silicon
(C) Graphite
(D) All are conductors
The answer is: (D) All are conductors ☑