Explanation

Caffeine occurs naturally in the tea plant,

Camellia sinensis, so all brewed tea contains some caffeine. 

Tea leaves contain 3.5% caffeine,

while

Coffee beans have 1.1–2.2%.

Explanation

An atomic bomb is based on the nuclear reaction known as nuclear fission,

A heavy atomic nucleus splits into two or more lighter nuclei, releasing a large amount of energy in an uncontrolled chain reaction.

The bombs dropped on Hiroshima and Nagasaki were examples of nuclear fission bombs, utilizing uranium-235 or plutonium-239 as the fissionable material. 

Explanation

The homogeneous mixture of two or more than two components is called Solution.

Filtration separates solids from liquids using a filter.

Sublimation & Distillation separate components based on phase changes (solid to gas & liquid boiling points).

Explanation

Explanation

Lemon is rich in Vitamin C, which helps boost immunity and improve skin health.

Other citrus fruits like oranges and lime are also high in Vitamin C.

Also known as ascorbic Acid

Deficiency of vitamin C causes skin diseases

Explanation

The melting point of ice at normal atmospheric pressure is 0 °C (zero degrees Celsius).

Key Points:

• 0 K (zero Kelvin) is equivalent to -273.15 °C, which is absolute zero, the lowest possible temperature.
• 100 °C is the boiling point of water at normal atmospheric pressure.

Explanation

Molten NaCl conducts electricity.

Because it contains free-moving Na⁺ and Cl⁻ ions.

Explanation

• Atmospheric pressure at sea level is 1 atm

Which equals:

• 101.325 kPa (1,013.25 hPa/millibars)
• 760 mmHg, or about 14.7 psi.

Explanation

Photoelectric effect occurs when photons have energy E = hv greater than the work function of the material.

Ultraviolet light has a higher frequency (shorter wavelength) than visible light, so its photons carry more energy, making the effect more likely.

Explanation

Angular momentum = Moment of Inertia × Angular Velocity  

 Moment of Inertia = Mass × (Length)² → [M L²]  

- Angular Velocity = [T⁻¹]

= [M L²] × [T⁻¹] = [M L² T⁻¹]

.....

The dimensional formula of momentum is:[M L T⁻¹]