1:1
1:2
2:1
2:3
Correct answer is A
1g of Hydrocarbon = 0.93g of Carbon, therefore, Hydrogen = (1 - 0.93)g = 0.07g
C : H
0.93 : 0.07
\(\frac{0.93}{12}\) : \(\frac{0.07}{1}\)
0.078 : 0.07
\(\frac{0.078}{0.07} : \frac{0.07}{0.07}\)
\(\approxeq 1:1\)
Which of the following statements is true about ionic radius? Ionic radius
increases as nuclear charge increases
decreases as nuclear charge increases
decreases as nuclear charge decreases
remains constant as nuclear charge increases
Correct answer is B
No explanation has been provided for this answer.
Which of the following methods can be used to seperate blood cells from plasma?
Centrifugation
Filtration
Chromatography
Distillation
Correct answer is A
No explanation has been provided for this answer.
+2 to +3
0 to +2
+3 to +2
+3 to 0
Correct answer is C
The oxidation number of Iron in \(FeCl_{3}\) = +3. The oxidation number in \(FeCl_{2}\) = +2.
The empirical formula of a compound containing 0.067mol Cu and 0.066mol O is [Cu = 63.5, O = 16]
\(Cu_{2}O\)
\(CuO\)
\(CuO_{2}\)
\(CuO_{4}\)
Correct answer is B
Cu : O
0.067 : 0.066
mole ratio \(\frac{0.067}{0.066}\) : \(\frac{0.066}{0.066}\)
= 1 : 1
= CuO