General MCQs
3711 questions available
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Q3701.What is the value of log₃ 81?
Correct Answer: B
Since 81 = 3⁴, log₃ 81 = 4.
Q3702.What is the square root of 48?
Correct Answer: A
√48 ≈ 6.928.
Q3703.What is the square root of 4.41?
Correct Answer: B
√4.41 = 2.1 because 2.1 × 2.1 = 4.41.
Q3704.Solve: 0.75 × 0.567 ÷ 0.134
Correct Answer: C
0.75 × 0.567 = 0.42525. 0.42525 ÷ 0.134 ≈ 3.172.
Q3705.Evaluate: cot(a - 90°) is equal to?
Correct Answer: B
cot(a - 90°) = -cot(90° - a) = -tan(a).
Q3706.How many triangles are there in a standard overlapping star figure?
Correct Answer: D
Counting all the small triangular peaks and the larger overlapping triangles yields 9.
Q3707.What is the standard log base commonly used in science and engineering?
Correct Answer: B
The logarithm base 10 is called the common or decimal logarithm and is the standard base used in scientific and engineering applications.
Q3708.An art teacher mixes 20 ounces of yellow paint with 8 ounces of red paint. How many ounces of yellow paint would she need to mix with 18 ounces of red paint to maintain the same proportion?
Correct Answer: C
Set up a proportion: Yellow / Red = 20 / 8. To find the new amount of yellow paint (x) for 18 ounces of red: x / 18 = 20 / 8 => x = (20 / 8) × 18 = 2.5 × 18 = 45 ounces.
Q3709.What is the boiling point of Sulfur in Celsius?
Correct Answer: C
The boiling point of elemental Sulfur at standard pressure is approximately 444.7°C.
Q3710.The sum of the first 3 prime numbers is:
Correct Answer: B
The first 3 prime numbers are 2, 3, and 5. Sum = 2 + 3 + 5 = 10.
Q3711.One trillion is equal to how many millions?
Correct Answer: A
By international scale: 1 Trillion = 10^12 = 1,000,000,000,000, which is equal to 1,000,000 millions (or million millions).