Questions
13. Out of the following, which is not emitted by radioactive substance
- [A] Electrons
- [B] Electromagnetic radiations
- [C] Alpha particles
- [D] Neutrons
Answer: Option [D]
14. Sound waves in air are
- [A] transverse
- [B] longitudinal
- [C] electromagnetic
- [D] polarised
Answer: Option [B]
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15. Materials for rain-proof coats and tents owe their water-proof properties to
- [A] Surface tension
- [B] viscosity
- [C] Lux
- [D] pascal
Answer: Option [A]
16. Sound of frequency below 20 Hz is called
- [A] audio sounds
- [B] infrasonic
- [C] ultrasonic
- [D] supersonics
Answer: Option [B]
17. Moment of inertia is
- [A] vector
- [B] scalar
- [C] phasor
- [D] tensor
Answer: Option [D]
18. Mercury is commonly used as a thermometric fluid rather than water because
- [A] specific heat of mercury is less than water
- [B] specific heat of mercury is more than water
- [C] mercury has greater visibility than water
- [D] density of mercury is more than the water
Answer: Option [C]
19. Radiocarbon dating technique is used to estimate the age of
- [A] Rocks
- [B] Fossils
- [C] Tree
- [D] Leaf
Answer: Option [B]
20. Light from the Sun reaches us in nearly
- [A] 2 minutes
- [B] 4 minutes
- [C] 8 minutes
- [D] 10 minutes
Answer: Option [C]
21. The types of inhibition pattern based on Michaelis Menten equation are
- [A] competitive
- [B] non-competitive
- [C] uncompetitive
- [D] all the above
Answer: Option [D]
22. Microbiosensors are based on
- [A] ions effect
- [B] ionsensitive field effect transistor
- [C] piezoelectric effect
- [D] magnetic effect
Answer: Option [B]
23. An allosteric inhibitor of an enzyme usually
- [A] participates in feedback regulation
- [B] denatures the enzyme
- [C] is a hydrophobic compound
- [D] causes the enzyme to work faster
Answer: Option [A]
24. Which of the following technology is used for micro array manufacturing
- [A] Photolithography
- [B] Ink jetting
- [C] Contact printing
- [D] All the above
Answer: Option [D]
