Category: Everyday Science MCQs

Quartz crystal in quartz watches works on the principle called:

(A) Photoelectric effect
(B) Stark effect
(C) Thermionic effect
(D) Piezo-electric effect

Answer: (D) Piezo-electric effect

Q. The word Piezoelectricity means electricity resulting from:
(A) pressure and latent heat
(B) movement of crystals
(C) application of current
(D) None of these

Answer: (A) pressure and latent heat

Q. Chemically quartz is a specific form of compound called:
(A) Aluminum dioxide
(B) Silicon dioxide
(C) Barium oxide
(D) None of these

Answer: (B) Silicon dioxide

The Fruits without seed, like banana, are called:

(A) seedless fruits
(B) parthenogenesis fruits
(C) parthenocarpic fruits
(D) placental fruits

Answer: (C) parthenocarpic fruits

Q. A small and pulpy fruit produced from the ovary of single flower in which the outer layer of the ovary wall develops into an edible fleshy portion is called a:
(A) Berry
(B) Soft fruits
(C) citrus fruits
(D) None of these

Answer: (A) Berry

Q. Which of the following fruit is a berry?
(A) Orange
(B) Mango
(C) Banana
(D) None of these

Answer: (C) Banana

Oasis is associated with:

(A) Glaciers
(B) Desert
(C) Island
(D) Volcanoes

Answer: (B) Desert

Q. A mixed woodland-grassland ecosystem characterized by the trees being widely spaced so that the canopy does not close is known as:
(A) Savanna
(B) Tundra
(C) Grassland
(D) None of these

Answer: (A) Savanna

Q. In biology, the above ground portion of a plant community or crop, formed by the collection of individual plant crown is called:
(A) forest
(B) trees group
(C) canopy
(D) None of these

Answer: (C) Canopy

Yeast is used in making bread because it produces:

(A) Carbon dioxide
(B) Sugar
(C) Bacteria
(D) Oxygen

Answer: (A) Carbon dioxide

Q. Yeast are eukaryostic single-celled microorganisms classified an members of the kingdom:
(A) Alga
(B) Fungus
(C) Protozoa
(D) None of these

Answer: (B) Fungus

Q. Eukaryotes are organisms whose cells have:
(A) nucleus enclosed within membrane
(B) nucleus without membrane
(C) more than one nucleus
(D) None of these

Answer: (A) nucleus enclosed within membrane

Ozone layer prevents the following radiation from entering the atmosphere:

(A) Infra-red
(B) Ultraviolet
(C) X-rays
(D) Gamma rays

Answer: (B) Ultraviolet

Q. “World Ozone Day” is celebrated on:
(A) September, 16
(B) October, 16
(C) November, 16
(D) December, 16

Answer: (A) September, 16

Q. Ozone is an inorganic molecule with the chemical formula:
(A) O2
(B) O3
(C) O4
(D) O5

Answer: (B) O3