1. ‘Archaeopteryx’ is a connecting link between which of the following classes of animal ?
(A) Amphibia and Aves
(B) Reptilia and Aves
(C) Reptilia and Mammalia
(D) Aves and Mammalia
2. Pearl is mainly constituted of—
(A) Calcium oxalate
(B) Calcium sulphate
(C) Calcium carbonate
(D) Calcium oxide
3. Which one of the following changes occur when salt is added in the water ?
(A) Boiling point is increased and freezing point is decreased
(B) Boiling point is decreased and freezing point is increased
(C) Both boiling point and freezing point are decreased
(D) Both boiling point and freezing point are increased
4. When a person enters in a dark room from strong light area, he is not able to see clearly for some time. Later he gradually begins to see things. This is because—
(A) Changes in the size of pupil
(B) Changes in the diameter and focal length of lens
(C) Bleaching and reformation of Rhodopsins
(D) Eyes become familiar with darkness in course of time
5. Mammoth is the ancestor of—
(A) Dog
(B) Horse
(C) Camel
(D) Elephant
6. Most stable Ecosystem is
(A) Forest
(B) Grassland
(C) Desert
(D) Marine
7. Which tree is called the ‘Flame of the Forest in Rajasthan’ ?
(A) Khejri
(B) Neem
(C) Palas
(D) Paras Peepul
8. National Water Development Agency was established in the year—
(A) 1969
(B) 1982
(C) 1980
(D) 1990
9. Place where the ‘Jal Durg’ (fort erected in water) is located—
(A) Ajmer
(B) Amber
(C) Siwana
(D) Gagron
10. Baxa Tiger Project is located in which state of India ?
(A) Madhya Pradesh
(B) Rajasthan
(C) Gujarat
(D) West Bengal
ANSWERS KEY:
1- (B)
2- (C)
3- (A)
4- (D)
5- (D)
6- (D)
7- (C)
8- (B)
9- (D)
10- (D)
1- (B)
2- (C)
3- (A)
4- (D)
5- (D)
6- (D)
7- (C)
8- (B)
9- (D)
10- (D)
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