1. : The smallest unit of heredity is ___
(A) Chromosomes
(B) Nucleotides
(C) Gene
(D) None
2. : The major culprit in the thinning of the Ozone layer in the earth’s stratosphere is _____
(A) Chlorofluorocarbons
(B) Carbon dioxide
(C) Nitrogen oxides
(D) Methane
3. : Which of the following is the property by virtue of which metals are beaten into thin sheets?
(A) Ductility
(B) Conductivity
(C) Malleability
(D) Density
4. : What are the elements made of?
(A) Compounds
(B) Molecules
(C) H2O
(D) Atoms
5. : What is the SI unit of time?
(A) Meter
(B) Kilogram
(C) Second
(D) Volt
6. : What is the speed of light?
(A) 280,000 km/s
(B) 320,000 km/s
(C) 300,000 km/s
(D) None of these
7. : Phobos is the natural satellite of ___
(A) Venus
(B) Mars
(C) Saturn
(D) Neptune
8. : What coating does the Galvanized Iron sheets have?
(A) Zinc
(B) Silver
(C) Tin
(D) Chromium
9. : The Spinach leaves are a big source of what?
(A) Iron
(B) Amino acid
(C) Vitamin E
(D) Carotene
10. : What causes the blue color of the sky?
(A) Reflection of light
(B) Dispersion of light
(C) Diffraction of light
(D) Refraction of light
11. : A device with which we convert mechanical energy into electric energy is____
(A) Generator
(B) Transformer
(C) Coil
(D) Motor
12. : Anything which takes up space and has mass is called_____
(A) Plasma
(B) Gravity
(C) Energy
(D) Matter
13. : What is all matter made of?
(A) Air
(B) Atoms
(C) Vibrations
(D) Water
14. : The damage to which of the following nerves can result in the defect of eye movement?
(A) Optic
(B) Abducens
(C) Trigeminal
(D) None
15. : Which of the following is the approximate intensity level of the sound that causes damage to the eardrum?
(A) 20 dB
(B) 60 dB
(C) 160 dB
(D) 100 dB
16. : With what is the fuse wire made?
(A) 63% lead and 37% aluminum
(B) 63% lead and 37% tin
(C) 63% tin and 37% aluminum
(D) 63% tin and 37% lead
17. : Which is not the region of the spinal cord?
(A) Thoracic
(B) Lumbar
(C) Pelvic
(D) None
18. : When a patient’s immune system becomes reactive to a drug, then what is this called?
(A) Drug resistance
(B) Allergy
(C) Superinfection
(D) None
