In which of the following pairs are both substances deliquescent?
CaCI2 and H2SO4
NaOH and MgSO4 7H2O
CaCI2 and NaOH
CUO and NaCI
CaCO3 and MgCI2
Correct answer is C
No explanation has been provided for this answer.
Which of the following compounds of tin is a strong reducing agent?
SnCI2
SnCI4
SnO2
SnH4
Sn(OH)2
Correct answer is D
No explanation has been provided for this answer.
When the trioxonitrate (IV) salt of an alkali metal Y is heated, the formula of the residue is
Y2O
YNO2
Y2O3
Y (NO2)2
YO2
Correct answer is B
No explanation has been provided for this answer.
Examples of polymers include the following except
starch
nylon
wool
perspex
glass
Correct answer is E
No explanation has been provided for this answer.
Which of the following will not affect the degree of hardness in a sample of temporarily hard water?
Addition of washing soda
Adding of soap
Treatment with carbon exchange resin
Filtration
Distillation
Correct answer is D
No explanation has been provided for this answer.