P2O5 is a hygroscopic powder which sublimes at______________?
P2O5 is a hygroscopic powder which sublimes at______________?
A. 260°C
B. 360°C
C. 630°C
D. 620°C
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Pollutants have adverse effect over_________________?
Pollutants have adverse effect over_________________?A. Biosphere
B. Ecosystem
C. Both a & b
D. HydrosphereThe main pollutant of leather tanneries in the waste water is____________________?
The main pollutant of leather tanneries in the waste water is____________________?A. chromium III
B. chromium IV
C. chromium V
D. chromium VISodium carbonate is produced by____________?
Sodium carbonate is produced by____________?
A. haber process
B. Amonia solvay process
C. decons process
D. lead chamber processEthers show functional group isomerism with __________________?
Ethers show functional group isomerism with __________________?A. aldehydes
B. ketones
C. alcohols
D. carboxylic acidAir is a/an _________?
Air is a/an _________?A. Compound
B. Element
C. Electrolyte
D. MixtureIn chemistry, a solution is a homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent.
Air is an example of gas solution as it is an homogeneous mixture of several gases.Which state of matter has the lowest density ?
Which state of matter has the lowest density ?A. Gas
B. Liquid
C. Solid
D. Plasma