Explanation

Under the National Education Policy 1972, free education was recommended up to class 10.

It would be implemented in two phases, making education up to class 8 free in 1972 and up to class 10 in 1974

Explanation

The motherboard is the central printed circuit board in a computer that serves as the foundation for all other hardware components.

All other devices, including the CPU, RAM, hard drives, and peripherals, connect directly or indirectly to the motherboard. 

Explanation

The sentence is in passive voice (future tense) — "will be written".

Its active voice is: "The teacher will write a letter."

Explanation

• Surah Al-Fatiha is also known as Al-Hamd (The Praise).
  It has 7 verses, 29 words, and 139 letters.
  It is also referred to as:
  • As-Salah (The Prayer)
  • Umm al-Kitab (Mother of the Book)
  • Umm al-Quran (Mother of the Quran)
  • Sab'a min al-Mathani (Seven Repeated Ones)
  • Ash-Shifa' (The Cure).

Explanation

At temperatures above the optimum, enzymes lose their three-dimensional shape — a process called denaturation.

Denatured enzymes cannot bind substrates properly, leading to a rapid drop in reaction rate.

Explanation

During systole, the right ventricle pumps blood into the pulmonary arteries (to the lungs).

The left ventricle pumps blood into the aorta (to the rest of the body).

Explanation

Meninges are the three protective membranes (dura mater, arachnoid mater, and pia mater) that surround the brain and spinal cord.

They help protect the central nervous system and contain cerebrospinal fluid (CSF).

Explanation

The larynx is commonly known as the voice box because it houses the vocal cords.

It is responsible for producing sound.

It is located in the throat.

Explanation

Vitamin B is found in:

• Vegetables (like leafy greens, bell peppers, and mushrooms)
• Whole wheat grains (like brown rice, quinoa, and whole-wheat bread)
• Fresh meat (like beef, chicken, and fish)

Vitamin B is a complex of several B vitamins, including:

• B1 (Thiamin)
• B2 (Riboflavin)
• B3 (Niacin)
• B5 (Pantothenic acid)
• B6 (Pyridoxine)
• B7 (Biotin)
• B9 (Folic acid)
• B12 (Cobalamin)

Explanation

Bronchial respiration refers to respiration through gills, mainly seen in fishes.

Gills extract dissolved oxygen from water and expel carbon dioxide.