Explanation

• Cow and Deer are herbivores because they feed on plants.
• Herbivores eat grass, leaves, fruits, and other plant materials.

Additional information:

• Herbivores: Cow, Deer, Goat, Rabbit, Elephant
• Carnivores: Lion, Tiger, Leopard, Wolf, Cheetah
• Omnivores: Human, Bear, Crow, Pig, Hen

Last verified on 27-07-2026

Explanation

• The liver is the largest gland in the human body.
• It is situated in the right upper quadrant of the abdomen, beneath the diaphragm, and above the stomach.
• It is reddish-brown.
• It is weighs approximately 1.5 kg.

• The pineal gland is the smallest gland.
• It about the size of a grain of rice.
• It weighs approximately 150 mg.
• It is part of the endocrine system.

Explanation

• Farad (F) is the SI unit of capacitance of a capacitor.
• Capacitance is the ability of a capacitor to store electric charge.
• One farad is equal to one coulomb of charge stored per one volt of potential difference.
• The unit is named after scientist Michael Faraday.

Additional information:

• Energy / Work → Joule (J)
• Electric Charge → Coulomb (C)
• Pressure → Pascal (Pa)
• Electric Current → Ampere (A)
• Power → Watt (W)
• Resistance → Ohm (Ω)
• Temperature → Kelvin (K)
• Torque → Newton metre (N·m)
• Velocity → metre per second (m/s)
• Acceleration → metre per second² (m/s²)

Last verified on 28-06-2026

Explanation

• The normal number of ribs in a human body is 24 (12 pairs).

Additional information:

• Upper ribs: True ribs (1–7 pairs)
• Lower ribs: False ribs (8–12 pairs)
• Floating ribs: Last 2 pairs (11–12)

Last verified on 24-06-2026

Explanation

• Diamond is a naturally occurring allotropic form of carbon.
• Allotropy means a single element can exist in more than one form with different structures and properties.
• It is extremely hard.
• It has a high melting point.
• It is widely used in jewelry and cutting tools.

Additional information:

• Graphite – soft, good conductor
• Fullerenes (C60) – spherical molecules
• Carbon nanotubes – tubular, high strength
• Amorphous carbon – coal, soot
• Lonsdaleite – hexagonal diamond

Last verified on 17-01-2026

Explanation

• Lyman series lies in the ultraviolet (UV) region of hydrogen spectrum.
• It is produced when an electron falls to the first energy level (n = 1).
• These transitions release high-energy photons.

Additional information:

• Balmer series lies in the visible region.
• Paschen and Brackett are in infrared.

Last verified on 05-06-2026

Explanation

• Oxidation of secondary alcohols produces ketones.
• Secondary alcohols have –OH group attached to a carbon bonded with two other carbons.
• During oxidation, hydrogen is removed and a carbonyl (C=O) group is formed.

Additional information:

• Primary alcohol → Aldehyde → Acid
• Secondary alcohol → Ketone (stops here)
• Tertiary alcohol → No easy oxidation

Last verified on 05-06-2026

Explanation

• RNA is formed from DNA during transcription.
• In RNA, thymine (T) is replaced by uracil (U).
• DNA base pairing rules are followed in complementary form.
• So TAGC in DNA becomes AUCG in RNA.

Last verified on 04-06-2026

Explanation

Explanation

• The kidney is an important organ responsible for filtering blood and forming urine.
• Its structural and functional unit is the nephron.
• Each kidney contains millions of nephrons.
• They perform filtration, reabsorption, and secretion.

Last verified on 23-04-2026