Trb Science interview questions

A material that allows partial transmission of incident light is called

1. transparent
2. transluscent
3. transducer
4. semi permeable

The ozone layer in the upper part of the atmosphere protects us from

1. ultraviolet radiations
2. cosmic rays
3. infra-red rays
4. visible radiations

Anti-freeze is a mixture of

1. acetic acid and water
2. ethyl alcohol and water
3. methyl alcohol and water
4. formic acid and water

Uranium is a naturally occurring radioactive element which emits alpha particles and is converted into

1. Actinium
2. Radium
3. Plutonium
4. Thorium

EEG is used for diagnosing ailments connected with

1. Brain
2. Kidney
3. Lungs
4. Heart

Red, green and blue are known as

1. Primary pigments
2. Primary colours
3. Secondary colours
4. Complementary colours

What makes a lemon sour?

1. Acetic acid
2. Citric acid
3. Hydrochloric acid
4. Tartaric acid

What fraction of a floating iceberg remains in side water?

1. 0.5
2. 0.7
3. 0.8
4. 0.9

A substance which can act both as an acid and a base is known as

1. Amphoteric
2. Allotropic
3. Amorphous
4. None of these

Which of the following is a conventional source of energy?

1. Wind
2. Hydropower
3. Geothermal
4. Solar

The Magnetic Resonance Imaging (MRI) is mainly used for which of the following purposes?

1. It is used to bring sharpness in colour photograpy
2. It is a new technique used in diagnosing diseases
3. It is a useful technique to measure the intensity of the magnetic fields
4. It is a technique used to monitor the functioning of a satellite placed in space

The metal which can join well with the glass is

1. Silver
2. Chromium
3. Nickel
4. Platinum

Instruments can be shielded from outside magnetic effects by surrounding them with

1. Glass shield
2. Brass shield
3. Rubber shield
4. Iron shield

The colouring matter in the process of bleaching of textiles by the use of bleaching powder gets

1. absorbed
2. displaced
3. reduced
4. oxidised

The soft smooth feel of the skin with after-shave lotion is due to

1. ethylene glycol
2. diethylphthalate
3. alcohol
4. none of these

The best quality of coal with least ash content is

1. anthracite
2. bituminous
3. peat
4. lignite

Electrolytes are

1. acids and bases only
2. acids and salts only
3. acids, bases and salts
4. bases and salts only

Water does not boil at

1. 273 K
2. 80°R
3. 100°C
4. 212°F

Red, yellow and blue are known as

1. primary colours
2. secondary colours
3. complementary colours
4. primary pigments

The gas which had leaked out of Union arbide factory in Bhopal was

1. sulphur dioxide
2. methyl isocyanate
3. carbon dioxide
4. chlorine

The most contractile part of the human body is

1. urinary bladder
2. iris
3. stomach
4. skin

The fourth state of matter is

1. solid
2. liquid
3. gas
4. plasma

Ion-exchange is a process of

1. fermentation
2. water softening
3. metal extraction
4. heavy water produced

In the medical system of treatment to relieve pains, called Acupuncture

1. electric shocks are applied
2. fine needles are pricked in the body
3. drugs are used
4. herbs are used

Vegetable crop with rectangular seeds is

1. carrot
2. onion
3. fenugreek
4. turnip

Mineral waxes are rich in

1. Carbohydrates
2. Poly alcohols
3. Poly ethers
4. Hydrocarbons

Which of the following substances has the lowest specific gravity?

1. Iron
2. Brass
3. Gold
4. Marble

White coal is

1. Hydro-electricity
2. Diamond
3. Uranium
4. Ice

Of the following, which one is the best insulator?

1. Wood
2. Paper
3. Cloth
4. Glass

Interactive service for transmission and reception of messages on printed medium through telephone lines is known as

1. Phonograph
2. Teleprint
3. Telefax
4. Teletext