Significant Figures

Q. 10. What is parts per million and parts per billion?

Q. The number of significant figures in the sum of 13.21, 8.0 and 2.222 are(a) 5(b) 4(c) 3(d) 2.

Q.

The number of significant figures in 0.0052 is:

1. 5

2. 4
3. 2

4. None of the above

Q.

Round up the followingupto three significant figures:

(i) 34.216

(ii) 10.4107

(iii) 0.04597

(iv) 2808

Q. how many significant figures are there in 1000 ? Is it 1 or 4 ? explanation also needed

Q. The value of $200lb$ in kilograms is

1. $440kg$
2. $100kg$
3. $90.9kg$
4. $400kg$

Q. What is the number of significant figures in 0.0053 Kg ?