41. Which of the following numbers has 5 significant figures?
A) 0.1234
B) 12000
C) 1.2300
D) 0.0001
42. How many significant figures are in 0.00708?
A) 2
B) 3
C) 4
D) 5
43. When multiplying 2.34 by 0.056, how many significant figures should be in the final answer?
A) 1
B) 2
C) 3
D) 4
44. Which of the following is correctly written in scientific notation?
A) 0.00045 × 10³
B) 4.5 × 10⁻⁴
C) 45 × 10²
D) 450000
45. Convert 0.00032 into scientific notation.
A) 3.2 × 10⁵
B) 3.2 × 10⁴
C) 3.2 × 10⁻³
D) 3.2 × 10⁻⁴
46. Which of the following numbers is equivalent to ? 6.02 × 10^5?
A) 0.00602
B) 60.2
C) 6020
D) 602000
47. Convert 5,600,000 into scientific notation.
A) 5.6 × 10³
B) 5.6 × 10⁶
C) 56 × 10⁵
D) 0.56 × 10⁷
48. Which of the following is NOT written correctly in scientific notation?
A) 1.23 × 10²
B) 0.45 × 10⁵
C) 7.89 × 10⁻³
D) 9.01 × 10⁴
49. Convert into decimal form.
A) 0.091
B) 91
C) 910
D) 0.0091
50. Which of the following is device used to measure length?
A) Meter Rule
B) Vernier Caliper
C) Micro Meter Screw Guage
D) All of these