Question: Which of the following polymers is obtained by copolymerisation of three monomers ?
[A].SAN
ABS
SBR
PTFE
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
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Window panes of aeroplanes are normally made of
Question: Window panes of aeroplanes are normally made of
[A].perspex (PMMA)
teflon (PTFE)
bakelite (phenol formaldehyde)
polystyrene
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
__________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.
Question: __________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.
[A].Beryllia
Zirconia
Alumina
Magnesia
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
A man walks 2 km towards North. Then he turns to East and walks 10 km. After this he turns to North and walks 3 km. Again he turns towards East and walks 2 km. How far is he from the starting point?
Question: A man walks 2 km towards North. Then he turns to East and walks 10 km. After this he turns to North and walks 3 km. Again he turns towards East and walks 2 km. How far is he from the starting point?
[A].10 km
13 km
15 km
None of these
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
Even though heat transfer co-efficients in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.
Question: Even though heat transfer co-efficients in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.
[A].film
nucleate
transition
all modes of
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
Out of the following surfaces, the emis-sivity will be minimum for
Question: Out of the following surfaces, the emis-sivity will be minimum for
[A].aluminium foil
concrete
plaster
smooth glass
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
Material having negative co-efficient of linear expansion is
Question: Material having negative co-efficient of linear expansion is
[A].copper
aluminium
rubber
nickel
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
__________ is a special constituent of chlorophyll without which photosynthesis is not possible.
Question: __________ is a special constituent of chlorophyll without which photosynthesis is not possible.
[A].Calcium
Nitrogen
Phosphorous
Hydrogen
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
If the pH value of a solution of sodium chloride is 7; then what will be the pH value of the solution after its electrolysis ?
Question: If the pH value of a solution of sodium chloride is 7; then what will be the pH value of the solution after its electrolysis ?
[A].7
< 7
> 7
0
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8
Question: Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8
[A].°C
°F
°K
°R
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.