Which of the following is normally used for drying ammonia gas?
Concentrated tetraoxonitrate (Vl) acid
Calcium oxide
anhydrous calcium chloride
phosphorus (V) oxide
anhydrous copper (ll) tetraoxosulphate (VI)
Correct answer is B
No explanation has been provided for this answer.
it is volatile
it is strongly oxidizing
it forms a layer of oxide on the metal
trioxonitrate (V) salts are soluble in water
it renders the metals passive
Correct answer is B
No explanation has been provided for this answer.
To what temperature must a gas be raised from 273K in order to double both its volume and pressure?
298k
300k
546k
819k
1092k
Correct answer is E
No explanation has been provided for this answer.
Which of the following is not correct of glucose and fructose?They
are structural isomers
reduce fehling's solution
can be obtained by the hydrolysis of starch
are readily fermented by enzymes
are soluble in water
Correct answer is C
No explanation has been provided for this answer.
Tetraoxosulphate (IV) acid is dibasic
the acid is concentrated
the acid is complately ionized in aqueous solution
tetraxosulphate (IV) ions are very reactive
the acid is highly corrosive
Correct answer is C
No explanation has been provided for this answer.