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Free trb questions Online Test - MeritNotes
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No. of Questions :10
Remaining Time :
1. What is the composition of Nitrolim a chemical fertilizer?
(a)
Calcium carbide and nitrogen
(b)
Calcium carbide and carbon
(c)
Nitrogen and limestone
(d)
None of the above
2. _____ alloys is used for making magnets.
(a)
Stainless steel
(b)
Magnalium
(c)
Duralumin
(d)
Alnico
3. A radioactive substance emits
(a)
Alpha particle
(b)
Beta particle
(c)
Gamma particle
(d)
All of the three
4. A mixture of ethyl alcohol and water can be separated by
(a)
Fractional distillation
(b)
Using a separating funnel
(c)
Sublimation
(d)
Evaporation
5. Which form of phosphorus is used in safety metals?
(a)
Black phosphorus
(b)
Yellow phosphorus
(c)
White phosphorus
(d)
Red phosphorus
6. Which of the following is not correctly matched?
(a)
Calomel - Mercurous chloride
(b)
Plaster of Paris - Calcium sulphate
(c)
Green vitriol - Copper sulphate
(d)
Galena - Lead sulphide
7. The percentage of carbon in cast iron is
(a)
0.1 - 1.5%
(b)
0.25 - 2%
(c)
1.3 - 4%
(d)
2 to 5%
8. The mixture of 25% ethanol and 75% petrol is known as
(a)
Absolute alcohol
(b)
Power alcohol
(c)
Methylated spirit
(d)
Rectified spirit
9. When the pH of a solution is zero, then it is
(a)
Basic
(b)
Neutral
(c)
Strongly acidic
(d)
None of these
10. The enzyme which converts glucose and fructose into alcohol is
(a)
Maltase
(b)
Zymase
(c)
Invertase
(d)
Diastase