Which of the following is not decomposed by heat?
CaCO3
CuCO3
ZnCO,sub>3
Na2CO3
MgCO3
Correct answer is D
No explanation has been provided for this answer.
Which of the following statements is not correct?
Carbon exhibits allotropy
Sulphur exhibits allotropy
Chlorine exhibits allotopy
Nitrogen is a gas
Argon is a noble gas
Correct answer is C
No explanation has been provided for this answer.
Which of the following is a neutral oxide?
Nitrogen (IV0 oxide
Carbon (IV) oxide
Sulphur (IV) oxide
Phodphoorus (IV) oxide
Nitrogen oxide
Correct answer is E
No explanation has been provided for this answer.
Which of the following types of hybridization gives rise to tetrahedral molecules?
sp
sp2
sp3
sp3d
sp3d2
Correct answer is C
No explanation has been provided for this answer.
Which of the following is used as an anaesthetic?
CHI3
CHCI3
CH3OH
C2H5OH
CHBr3
Correct answer is B
No explanation has been provided for this answer.