only 10g of X undissolved
only 16 g of Y undissolved
10 g of X and 16 g of Y undissolved
all X and Y dissolved
all X and Y undissolved
Correct answer is B
For salt X, from the graph, 80g of X dissolves by 349K, so by 353K, all 80g of X is dissolved totally in 100g of water. For salt Y, from the graph, 64g of Y dissolves by 353K, so (80-64)g of Y is left undissolved. This is 16g of Y left undissolved at that temperature.
Y is twice as soluble as X
X is twice as soluble as Y
X and Y are soluble to the same extent
X is three times as soluble as Y
Y is three times as soluble as X
Correct answer is A
No explanation has been provided for this answer.
Figure 1 above shows part of the periodic Table which of the elements belongs to the p-block?
S, T and U
V, W and X
S and T only
P, Q and R
V, W, X and S
Correct answer is D
No explanation has been provided for this answer.
The I.U.P.A.C name for the compound is
isopropylethene
acetylene
3- methylbutane
2-methylbutane
5-methylpentane
Correct answer is D
No explanation has been provided for this answer.
A
B
C
D
E
Correct answer is D
Isomers have the same molecular structures(but different structures). so whatever the structures are, they must contain the same amount of carbon, the same amount of hydrogen, and the same amount of oxygen as in this case. Just count the number of hydrogens (including the hydrogen in OH). you should get 10 hydrogens from A, B, C, and E. in total, you should have C4H10O. options A, B, C, and E have this in common. but the option D has only C4H8O.
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