Main constituent of limestone is
Question: Main constituent of limestone is
[A].
CaCO3
MgCO3
Na2CO3
CaSO4
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
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Deaeration of water in its treatment is necessary, as it___________________?
Deaeration of water in its treatment is necessary, as it___________________?A. Minimises its turbidity
B. Helps in controlling its taste and odour
C. Minimises its corrosiveness
D. None of theseChemical formula of biuret is
Question: Chemical formula of biuret is
[A].NH2.CO.NH2 [B].
NH3.COO.NH3 [C].
NH2CONHCONH2 [D].
NH4COONH2 Answer: Option C
Explanation:
No answer description available for this question.
Drying of a wet solid under constant drying conditions means the exposure of the wet solid to the air of constant
Question: Drying of a wet solid under constant drying conditions means the exposure of the wet solid to the air of constant
[A].humidity [B].
velocity [C].
temperature [D].
all (a), (b) & (c) Answer: Option D
Explanation:
No answer description available for this question.
Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at _____________ °C ?
Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at _____________ °C ?A. 15-30
B. 90-100
C. 250-300
D. < 0In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor.
Question: In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor.
[A].increases with increase in [B].
is one at unity value of [C].
both (a) and (b) [D].
neither (a) nor (b) Answer: Option C
Explanation:
No answer description available for this question.
Bromides contained in hot mother liquor is treated with ______________ during manufacture of bromine from sea water ?
Bromides contained in hot mother liquor is treated with ______________ during manufacture of bromine from sea water ?A. SO3
B. Cl2
C. NH3
D. SO2