Question: Lead is poured into the joint between two- __________ pipes.
[A].mild steel
concrete
cast iron
asbestos cement
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Freezing of 35% oleum during its shipment in winter is avoided by the addition of small amount of
Question: Freezing of 35% oleum during its shipment in winter is avoided by the addition of small amount of
[A].hydrochloric acid
methyl alcohol
formic acid
nitric acid
[A].
[B].
[C].
[D].
Answer: Option D
Explanation:
No answer description available for this question.
Five bells begin to toll together and toll respectively at intervals of 6, 5, 7, 10 and 12 seconds. How many times will they toll together in one hour excluding the one at the start ?
Question: Five bells begin to toll together and toll respectively at intervals of 6, 5, 7, 10 and 12 seconds. How many times will they toll together in one hour excluding the one at the start ?
[A].7 times
8 times
9 times
11 times
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
L.C.M. of 6, 5, 7, 10 and 12 is 420.
So, the bells will toll together after every 420 seconds i.e. 7 minutes.
Now, 7 x 8 = 56 and 7 x 9 = 63.
Thus, in 1-hour (or 60 minutes), the bells will toll together 8 times, excluding the one at the start.
With increase in temperature, the electrical conductivity of semiconductors
Question: With increase in temperature, the electrical conductivity of semiconductors
[A].increases.
decreases.
remain constant.
either (a) or (b), depends on the type of semi-conductor.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Normalising does not __________ of a metal.
Question: Normalising does not __________ of a metal.
[A].improve machinability & tensile strength
remove internal stresses
refine the structure
remove strains caused by cold working
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Mac has £ 3 more than Ken, but then Ken wins on the horses and trebles his money, so that he now has £ 2 more than the original amount of money that the two boys had between them. How much money did Mac and Ken have between them before Ken’s win ?
Question: Mac has £ 3 more than Ken, but then Ken wins on the horses and trebles his money, so that he now has £ 2 more than the original amount of money that the two boys had between them. How much money did Mac and Ken have between them before Ken’s win ?
[A].£ 9
£ 11
£ 13
£ 15
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
Let money with Ken = x. Then, money with Mac = x + £ 3.
Now, 3x = (x + x + £ 3) + £ 2 x = £ 5.
Therefore Total money with Mac and Ken = 2x + £ 3 = £ 13.
__________ flux is used for the extraction of metal from its self fluxing ores.
Question: __________ flux is used for the extraction of metal from its self fluxing ores.
[A].No
Acid
Basic
Neutral
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Corrosion of metals can not be prevented by its
Question: Corrosion of metals can not be prevented by its
[A].tempering
chromising
aluminising
alloying
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Energy required to compress a hot gas as compared to cold gas will be
Question: Energy required to compress a hot gas as compared to cold gas will be
[A].more.
less.
same.
more or less depending upon the nature of the gas.
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
In connection with corrosion of metals, passivation is the process that
Question: In connection with corrosion of metals, passivation is the process that
[A].intensifies deterioration.
changes the composition of the metal.
inhibits further deterioration.
none of these.
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.