1. Arrange the following electromagnetic waves in the descending order of their wavelength in the Electromagnetic Spectrum:
1.Infra-Red
2.Ultra-Violet
3.Microwaves
4.Radiowaves
[A]4-3-1-2
[B]1-2-3-4
[C]2-3-1-4
[D]2-1-3-4
4-3-1-2
2. Television Remote Controls and Night-Vision Goggles are operated using :
[A]Microwaves
[B]Infra-Red rays
[C]Ultra-Violet Rays
[D]LASER
Infra-Red rays
3. GPRS is the abbreviated form of:
[A]General Packet Remote Synchronization
[B]Globally Postioned Radio System
[C]General Packet Radio Service
[D]Globally Positioned Radio Service
General Packet Radio Service
4. Blue-tooth networking transmits data via low power _______ :
[A]Microwaves
[B]Radiowaves
[C]Infrared Rays
[D]Gamma Rays
Radiowaves
5. After alcohol consumption person cannot walk properly because alcohol affects his:
[A]Spinal Cord
[B]Cerebrum
[C]Cerebellum
[D]Medulla Oblongata
Cerebellum
6. ‘Cretinism’ is caused by the under-secretion of which of the following hormones?
[A]Adrenaline
[B]Thyroxin
[C]Testosterone
[D]Insulin
Thyroxin
7. Consider the following plants:
1.Jatropha
2.Eucalyptus
3.Pongamia
Which among the above are used to obtain ‘Biodiesel’?
[A]Only 1
[B]1 and 3
[C]2 and 3
[D]1, 2 and 3
1 and 3
8. Astigmatism is a _____ disorder:
[A]Visual
[B]Olfactory
[C]Genetic
[D]Hormonal
Visual
9. Consider the following Statements regarding ‘Chlorophyll’ pigment:
1.It is a poor absorber of green and near-green wavelengths of the electromagnetic spectrum.
2.Chlorophyll molecule complex centred around a Magnesium ion.
Which of the Statement(s) given above are correct?
[A]Only 1
[B]Only 2
[C]Both 1 and 2
[D]Neither 1 nor 2
Both 1 and 2
10. ‘Histology’ is a branch of biology which deals with the study of :
[A]Tissues
[B]Cell division
[C]Prokaryotes
[D]Ageing and Senescence
Tissues
11. Which among the following is the smallest gland of the human body?
[A]Pineal Gland
[B]Islets of Langerhans
[C]Adrenal Cortex
[D]Thyroid Gland
Pineal Gland
12. Which of the following is the ‘least distance of distinct vision’ for a healthy human eye?
[A]25 cm
[B]45 cm
[C]50 cm
[D]90 cm
25 cm
13. Consider the following properties of radioactive ‘Alpha-Rays’:
1.Alpha Rays consist of doubly-ionised Helium atoms.
2.They have the highest ionising and penetrating power.
Which of the above Statement(s) is/are correct?
[A]Only 1
[B]Only 2
[C]Both 1 and 2
[D]Neither 1 nor 2
Only 1
Alpha Rays have the highest Ionization power but Gamma Rays have the highest penetrating power.
14. Which among the following chemical compounds is used to bring ‘artificial rain’?
[A]Magnesium Chloride
[B]Silver Iodide
[C]Potassium Bromide
[D]Sodium Hypochlorite
Silver Iodide
15. Which among the following is being used as fuel in the ‘Fast-Breeder’ Reactor of Kalpakkam?
[A]Polonium
[B]Thorium
[C]Plutonium
[D]Enriched-Uranium
Thorium