WorksheetsCHEMISTRY QUIZZ FOR CLASS 7
Total questions: 7
Worksheet time: 2mins
Name
Class
Date
1.
IS MUGA A DOMESTICATED VARIETY OF SILK?
a)
TRUE
b)
FALSE
2.
WHAT IS THE SCIENTIFIC NAME FOR SILKWORM?
a)
none of these
b)
Mollusca
c)
Merino Mori
d)
Bombyx Mori
3.
NAME A SOUNDPROOF FIBRE/ SKIN-
a)
LEATHER
b)
SILK
c)
WOOL
d)
LUTE
4.
WHICH OF THE FOLLOWING IS/ ARE BASES?
HINT- [more than 1 options are correct]
a)
Mg(OH)2
b)
Ca(OH)2
c)
KOH
d)
NAOH
e)
none of these
5.
HEALTHY HUMAN BLOOD IS ACIDIC.
a)
FALSE
b)
TRUE
c)
T
6.
ACID USED IN FIRE EXTINGUISHER IS-
a)
H2SO4
b)
HNO3
c)
NaOH
d)
NONE OF THESE
7.
WHAT IS THE PRODUCT OF- NaHCO3+ H2SO4?
a)
Na2SO4 + H20 + CO2
b)
NaHSO4 + H20 + CO2
c)
Na2SO4 + H20 + O2
d)
NaHSO4 + H20 + O3
100 %
