trb questions Interview Questions and Answers
Ques:- Instruments can be shielded from outside magnetic effects by surrounding them with
A. Glass shield
B. Brass shield
C. Rubber shield
D. Iron shield
Ques:- The colouring matter in the process of bleaching of textiles by the use of bleaching powder gets
A. absorbed
B. displaced
C. reduced
D. oxidised
Ques:- The soft smooth feel of the skin with after-shave lotion is due to
A. ethylene glycol
B. diethylphthalate
C. alcohol
D. none of these
Ques:- The best quality of coal with least ash content is
A. anthracite
B. bituminous
C. peat
D. lignite
Ques:- A material that allows partial transmission of incident light is called
A. transparent
B. transluscent
C. transducer
D. semi permeable
Ques:- Electrolytes are
A. acids and bases only
B. acids and salts only
C. acids, bases and salts
D. bases and salts only
Ques:- The ozone layer in the upper part of the atmosphere protects us from
A. ultraviolet radiations
B. cosmic rays
C. infra-red rays
D. visible radiations
Ques:- Anti-freeze is a mixture of
A. acetic acid and water
B. ethyl alcohol and water
C. methyl alcohol and water
D. formic acid and water
Ques:- Uranium is a naturally occurring radioactive element which emits alpha particles and is converted into
A. Actinium
B. Radium
C. Plutonium
D. Thorium
Ques:- Red, green and blue are known as
A. Primary pigments
B. Primary colours
C. Secondary colours
D. Complementary colours
Ques:- A substance which can act both as an acid and a base is known as
A. Amphoteric
B. Allotropic
C. Amorphous
D. None of these
Ques:- Which of the following is a conventional source of energy?
A. Wind
B. Hydropower
C. Geothermal
D. Solar
Ques:- The Magnetic Resonance Imaging (MRI) is mainly used for which of the following purposes?
A. It is used to bring sharpness in colour photograpy
B. It is a new technique used in diagnosing diseases
C. It is a useful technique to measure the intensity of the magnetic fields
D. It is a technique used to monitor the functioning of a satellite placed in space