Bihar Polytechnic Entrance Model Paper 1

Rajasthan Patwari General Science Paper 2015

A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top
(a) Plane, Convex and Concave
(b) Convex, Concave and Plane
(c) Convex, Plane and Concave
(d) Concave, Plane and Convex

The far point of a myopic person is 80 cm in front of the eye. The nature and power of the lens required is
(a) A convex lens of power + 1.25D
(b) A concave lens of power – 1.25D
(c) A convex lens of power – 1.25D
(b) A concave lens of power + 1.25D

The magnetic field inside a long straight solenoid carrying current
(a) Is zero
(b) decreases as we move towards its end
(c) increases as we move towards its end
(d) is the same at all points

The Ti plasmid used in genetic engineering is obtained from
(a) Bacillus thuringiensis
(b) Escherichia Coli
(c) Agrobacterium Rhizogenes
(d) Agrobacterium Tumefaciens

Hormone Production is a function related to
(a) Hypothalamus
(b) Pons
(c) Hippocampus
(d) Medulla

The life span of RBC is
(a) 100 days
(b) 110 days
(c) 120 days
(d) 130 days

Which of the following viruses causes common cold?
(a) Rhino Virus
(b) T4 Virus
(c) MSZ Virus
(d) Simian Virus 40

From which one of the following plants, the insecticide pyrethrum is prepared
(a) Cymbopogon
(b) Chrysanthemum
(c) Tephrosia
(d) Velivera

When n resistances each of value r are connected in paralel, then resultant resistance is x, when these n resistances are connected in series, total resistance is
(a) nx
(b) rnx
(c) x/n
(d) nnx

Antibodies are
(a) Gama globulins
(b) albumins
(c) Vitamins
(d) Sugar