Related Questions

Which one of the following gases dissolves in water to give acidic solution?
A Carbon dioxide
B Oxygen
C Nitrogen
D Hydrogen
কোন যৌগটি পানিতে সহজে দ্রবীভূত হয়ে গাঢ় সালফিউরিক এসিডের সাথে বাষ্পযুক্ত সাদা ধোঁয়া তৈরি করে এবং জলীয় সিলভার নাইট্রেট দ্রবণে সাদা অধঃক্ষেপ দেয়? (Which compound dissolves easily in water, form steamy white fumes with concentrated sulfuric acid and gives white precipitate with aqueous silver nitrate solution?)
A AgCl
B NaBr
C NaCl
D PbBr2
Solubility of a substance which dissolves with an increase in volume and liberation of heat will be favoured by the
A Low pressure and high temperature
B Low pressure and low temperature
C High pressure and low temperature
D High pressure and high temperature
Gold dissolves in
A Hydrochloric acid
B Nitric acid
C Aqua regia
D Acetic acid
Bitumen completely dissolves in
A Carbon bisulphide
B Chloroform
C Coal tar
D All of these
When the solvent dissolves very little of solute, then
A Solvent of low latent heat of vaporisation should be used
B Solvent of low freezing point should be used
C Large quantity of solvent is required to extract the solute
D Very small quantity of solvent is required
Burning of coal produces oxides of sulphur and nitrogen which combined with water vapor leads to
A acid rain
B brackish water
C forest fire
D soil pollution
When water emulsion is used as the fuel in SI engine the emission of nitrogen oxides reduces significantly, this is due to
A Water reacts with nitrogen oxides
B Water does not contain nitrogen
C The combustion temperature decreased
D The combustion temperature increased
The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent.
A 60
B 30
C 95
D 100
Which one of the following oxides of Nitrogen is also known as Laughing Gas?
A NO2
B N2O5
C NO
D N2O

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