Which of the following pairs of compounds belongs to the same homologous series?
C3H8 and C3H6
C4H10 and C5H10
C2H4 and C4H10
C2H6 and C4H10
Correct answer is D
both ethane and butane are in the same homologous series.( alkanes)
Which of the following pairs of elements forms amphoteric oxides?
Be and Mg
Na and K
B and Al
Si and Pb
Correct answer is D
Metal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides.
Many metals (such as zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides.
20
18
16
2
Correct answer is A
No explanation has been provided for this answer.
The shape of a molecule of water is _______?
Non-linear
Octahedral
Pyramidal
Tetrahedral
Correct answer is A
No explanation has been provided for this answer.
The compound formed between 14X and 16Y is _______?
XY
XY2
X2Y
X4Y6
Correct answer is B
No explanation has been provided for this answer.