Explanation

A deficiency of Vitamin D results in Rickets in children and osteomalacia in adults.

A deficiency of Vitamin D also causes:

• Bone Pain
• Weak Bones
•  Skeletal Deformities.

Sunlight is a good source of Vitamin D.

 Additional Information:

Vitamin A deficiency causes night blindness

Vitamin C deficiency causes scurvy 

Vitamin B (B7) deficiency causes hair fall

SH10-8-2023AGM 28.02.28ND16112023

Explanation

Hydrogen is the most abundant element in the universe.

it is about 75 percent of its normal matter and was created in the Big Bang.

Additional information:

Oxygen is the most abundant element in the earth`s crust.

Calcium is the most abundant mineral in the human body.

Explanation

Most abundant element in Earth crust is Oxygen.

Oxygen in the crust is (46.1%).

The chemical formula of oxygen (dioxygen) is O2.

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List of 10 Most Abundant Elements in the Earth's Crust

Explanation

A power level of 1 hp is approximately equivalent to 746 watts (W) or 0.746 kilowatts (kW).

Explanation

Explanation

Plasma is the fourth state of matter, following:

1. Solids
2. Liquids
3. Gases

It consists of ionized gases with equal numbers of positively and negatively charged particles.

Explanation

Carbon dioxide (CO₂) is commonly used in fire extinguishers because it helps to displace oxygen and smother the fire, preventing it from spreading.

It is particularly effective for electrical fires and fires involving flammable liquids.

Explanation

The hardest substance in the world is diamond.

Its hardness is due to the strong covalent bonding between its carbon atoms.

This making it the most resistant to scratching.

Category: Native minerals

Cleavage: 111 (perfect in four directions)

Crystal class: Hexoctahedral (m3m); H-M symbol: (4/m 3 2/m)

Crystal habit: Octahedral

Crystal system: Cubic

Dana classification: 1.3.6.1

Density: 3.5–3.53 g/cm3 3500–3530 kg/m3

Explanation

Battery is a device that converts chemical energy into electrical energy.

Batteries work by using a galvanic cell.

It is an electrochemical device made up of two electrodes and an electrolyte solution.

Explanation

Wilhelm Conrad Rontgen discovered X-rays

He was discovered on 8 November 1895.

He got the Nobel Prize in Physics in 1901.

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Additional questions

The penetrating power of X-rays depends on their frequency