1
MCQ (Single Correct Answer)
Two students performed the same experiment separately and each one of them recorded two readings of mass which are given below. Correct reading of mass is 3.0 g . On the basis of given data, mark the correct option out of the following statements
| Students | Readings | |
|---|---|---|
| (i) | (ii) | |
| A | 3.01 | 2.99 |
| B | 3.05 | 2.95 |
A
Results of both the students are neither accurate nor precise
B
Results of student $A$ are both precise and accurate
C
Results of student $B$ are neither precise nor accurate
D
Results of student $B$ are both precise and accurate
2
MCQ (Single Correct Answer)
A measured temperature on Fahrenheit scale is $200^{\circ} \mathrm{F}$. What will this reading be on celsius scale?
A
$40^{\circ} \mathrm{C}$
B
$94^{\circ} \mathrm{C}$
C
$93.3^{\circ} \mathrm{C}$
D
$30^{\circ} \mathrm{C}$
3
MCQ (Single Correct Answer)
What will be the molarity of a solution, which contains 5.85 g of $\mathrm{NaCl}(s)$ per 500 mL ?
A
$4 \mathrm{~mol} \mathrm{~L}^{-1}$
B
$20 \mathrm{~mol~L}^{-1}$
C
$0.2 \mathrm{~mol} \mathrm{~L}^{-1}$
D
$2 \mathrm{~mol~L}^{-1}$
4
MCQ (Single Correct Answer)
If 500 mL of a 5 M solution is diluted to 1500 mL , what will be the molarity of the solution obtained?
A
1.5 M
B
1.66 M
C
0.017 M
D
1.59 M
5
MCQ (Single Correct Answer)
The number of atoms present in one mole of an element is equal to Avogadro number. Which of the following element contains the greatest number of atoms?
A
4 g He
B
46 g Na
C
0.40 g Ca
D
12 g He