Pure water has
a pH of………
a) 8
b) 7
c) 6
d) 5
On the pH level scale that is shown in the
following picture, the PH of pure water is……, which is considered be natural
PH.
NTS PET24/08/2019 (1:30)
a) 05
b) 06
c) 07
d) 08
Thermometer is
filled with material which should have:
a) high freezing point
b) low freezing point
c) moderate freezing point
d) no fixed freezing point
Salt also known as……….
a) table salt
b) rock salt
c) both a and b
d) all of these
Formula of Table salt is………..
a) NaCl
b) NaCl2
c) Agcl
d) Ts
Which of the following chemicals make the washing powder dry?
a) sodium triphosphate of sodium carbonate
b) sodium triphosphate or sodium bicarbonate
c) sodium Bi-Phosphate or sodium tri-carbonate
d) sodium sulphate and sodium silicate
