18 – 6 / 2 + 4 * 3?
Correct answer is: D. 27
BODMAS: 6/2=3, 4*3=12 → 18-3+12=27.
Which part of the brain is medulla oblongata responsible for temperature regulation?
Correct answer is: A. Hypothalamus
Temperature regulation is controlled by the hypothalamus.
Carbon dating is used for?
Correct answer is: B. Finding the age
Carbon dating determines the age of organic materials.
Complete the number series: 1, 8, 4, 27, 9, ______?
Correct answer is: A. 64
Pattern alternates: n³, n² → 1³,2³,2²,3³,3²,4³=64.
Antonym of Plausible
Correct answer is: A. Unlikely
Plausible means believable; antonym is Unlikely.
Which type of electromagnetic radiation has the shortest wavelength and highest energy?
Correct answer is: B. Gamma rays
Gamma rays have the shortest wavelength and highest energy.
Progressive education emphasizes learning by ____?
Correct answer is: C. Doing
Progressive education focuses on experiential learning (“learning by doing”).
A rectangle has a perimeter 50cm and its length is 15cm. What is the breadth?
Correct answer is: A. 10
Perimeter = 2(l+b) → 50 = 2(15+b) → b = 10 cm.
A linear equation in two variables always represents a?
Correct answer is: A. Straight line
Linear equations graph as straight lines in two dimensions.