A ball is thrown upward with initial velocity 20 m/s. Taking g = 10 m/s², what is the maximum height reached?

The correct answer is C: 20 m. Using v² = u² - 2gh, where final velocity v = 0 at maximum height: 0 = (20)² - 2(10)h, so h = 400/20 = 20 m.

The process by which plants prepare their food using sunlight is known as:

The correct answer is B: Photosynthesis. Photosynthesis is the process where plants use sunlight, water, and CO₂ to produce glucose and oxygen. The equation is 6CO₂ + 6H₂O + light → C₆H₁₂O₆ + 6O₂.

Which of the following exhibits wave-particle duality?

The correct answer is C: Both light and electrons. De Broglie proposed that all matter exhibits wave-particle duality. Both light (photons) and electrons show properties of both waves and particles, confirmed by experiments like double-slit interference and photoelectric effect.

Which of the following pairs correctly represents the SI units of momentum and impulse respectively?

The correct answer is C: kg·m/s and N·s. # SI Units of Momentum and Impulse Momentum and impulse are related concepts in physics, but they represent different physical quantities with distinct SI units. Step 1: **Determine the SI Unit of Momentum** Momentum is defined as the product of mass and velocity. Using the fundamental SI units of m

Which phenomenon is responsible for the reddish appearance of the Sun at sunset?

The correct answer is B: Scattering of light. At sunset, light travels through a longer path in the atmosphere. Shorter wavelengths (blue) scatter more (Rayleigh scattering), leaving longer wavelengths (red) to reach the observer.

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General Science
Human Body

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Difficulty: All Easy Medium Hard 1–1 of 1

Topics in General Science

All Physics 106 Chemistry 9 Biology 2 Botany 78 Human Body 4 Disease & Health 2 Space & Astronomy 5 Environment 1

Q.1 Medium Human Body

Universal blood donor group?

A A+

B B+

C AB+

D O-

Correct Answer: D. O-

EXPLANATION

O- has no antigens, universal donor.

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