πŸ“Š Science
Q. The chemical behavior of an atom depends upon –
  • (A) the number of Neutrons in the nucleus
  • (B) the number of Nucleons in the nucleus
  • (C) the number of Protons in its nucleus
  • (D) the number of Electrons orbiting around the nucleus
πŸ’¬ Discuss
βœ… Correct Answer: (D) the number of Electrons orbiting around the nucleus
πŸ“Š Science
Q. Many Fungi belonging to the genera Microporum Trichophyton and Epidermophyton are responsible for –
  • (A) Filarial
  • (B) Cancer
  • (C) Ringworms
  • (D) AIDS
πŸ’¬ Discuss
βœ… Correct Answer: (C) Ringworms
πŸ“Š Science
Q. A boat will submerge when it displaces water equal to its own –
  • (A) volume
  • (B) weight
  • (C) surface area
  • (D) density
πŸ’¬ Discuss
βœ… Correct Answer: (B) weight
πŸ“Š Science
Q. Which organ of Human body is affected by Alzheimer disease ?
  • (A) Brain
  • (B) Bone Marrow
  • (C) Lung
  • (D) Intestine
πŸ’¬ Discuss
βœ… Correct Answer: (A) Brain
πŸ“Š Science
Q. What is the chemical name of vitamin E ?
  • (A) Calciferol
  • (B) Tocopherol
  • (C) Riboflavin
  • (D) Phylloquinone
πŸ’¬ Discuss
βœ… Correct Answer: (B) Tocopherol
πŸ“Š Science
Q. 'Cerebral palsy' is a brain disorder found generally in –
  • (A) Old people
  • (B) Drug addicts
  • (C) Small children
  • (D) Only in ladies
πŸ’¬ Discuss
βœ… Correct Answer: (C) Small children

Explanation: Cerebral palsy (CP) is a group of permanent movement
disorders that appear in early childhood. Signs and
symptoms vary between people. Often, symptoms
include poor coordination, stif f muscles, weak
muscles, and tremors. There may be problems with
sensation, vision, hearing, swallowing, and speaking.
Often babies with cerebral palsy do not roll over, sit,
crawl, or walk as early as other children their age.
Difficulty with the a bi lity to think or reason and
seizures each occurs in about one third of people with
CP.

πŸ“Š Science
Q. The mirror used in search light is –
  • (A) Concave Mirror
  • (B) Convex Mirror
  • (C) Plane Mirror
  • (D) None of these
πŸ’¬ Discuss
βœ… Correct Answer: (D) None of these

Explanation: A search light produces an intense parallel beam of
light. This requires a reflector of large aperture. When
a source is placed at the focus of a large concave
mirror only the paraxial rays (not the marginal rays) are
reflected as parallel beam, but when a source is placed
at the focus of parabolic mirror all the rays are reflected
as an intense parallel beam.

πŸ“Š Science
Q. Which one of the following glands produces the growth hormone (somatotrophin)?
  • (A) Adrenal
  • (B) Pancreas
  • (C) Pituitary
  • (D) Thyroid
πŸ’¬ Discuss
βœ… Correct Answer: (C) Pituitary

Explanation: Growth hormone is produced in the growth-stimulating somatotropic cells of the pituitary gland, which is located at the base of the brain.

πŸ“Š Science
Q. Carbon dioxide is called a greenhouse gas because
  • (A) its concentration remains always higher than other gases
  • (B) it is used in photosynthesis
  • (C) it absorbs infrared radiation .
  • (D) it emits visible radiation
πŸ’¬ Discuss
βœ… Correct Answer: (C) it absorbs infrared radiation .
πŸ“Š Science
Q. Laser is a device to produce
  • (A) a beam of white light
  • (B) coherent light
  • (C) microwaves
  • (D) X rays
πŸ’¬ Discuss
βœ… Correct Answer: (B) coherent light

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