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Railway RRB RRC NTPC,GROUP-D FREE MOCK TESTS/GENERAL SCIENCE TEST-03

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1/10
Lens which is thicker in the middle than at the edges are called
Biconcave
Plane Mirror
concave lens
convex lens
2/10
Which mineral deficiency causes abnormal blood cell development and bone demineralization?
Calcium
Copper
Zinc
Magnesium
3/10
The stage of the embryo in which all the body parts can be identified is called a/an ___________
foetus
gamete
zygote
egg
4/10
Power of a lens of focal length f is given by
P=f/u
P=f
P=u/f
P=1/f
5/10
The most important hormone secreted by the Pineal gland is
Androgens
Para hormone
Melatonin
Thyroxine
6/10
Nervous tissue is made of ___________ that receive and conduct impulses
mucus
enzymes
neurons
nephrons
7/10
Which is mainly responsible for fight (or) flight reactions?
Posterior part of the hypothalamus
Adrenal cortex
Anterior part of the hypothalamus
Adrenal medulla
8/10
Which vitamin does convert prothrombin to thrombin?
Vitamin B2
Vitamin A
Vitamin K
Vitamin D
9/10
The number of complete oscillations per unit time is called the ________
wavelength
frequency
time period
amplitude
10/10
What is the symbol of the element Bromine?
Bi
B
Br
Be
Result:

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