The sky appears blue due to its?
(A) Refraction of Light
(B) Reflection of Light
(C) Scattering of Light
(D) Diffraction of Light
Refraction of light is responsible for:
(A) Shadow formation
(B) Twinkling of stars
(C) Blue color of the sky
(D) Rainbow
Blood group was discovered by -
(A) Karl Landsteiner
(B) Pavlov
(C) Alexander Fleming
(D) William Harvey
Penicillin is extracted from-
(A) Fungus
(B) Lichen
(C) Yeast
(D) Algae
Pituitary gland is located in?
(A) Liver
(B) Intestine
(C) Brain
(D) Kidney
Goiter / excessive growth of thyroid gland causes by the deficiency of:
(A) Calcium
(B) potassium
(C) Iodine
(D) Iron
Which of the following is a water-Soluble vitamin?
(A) Vitamin B
(B) Vitamin A
(C) Vitamin D
(D) Vitamin K
The water-soluble vitamins include ascorbic acid (vitamin C), thiamin, riboflavin, niacin, vitamin B6 (pyridoxine, pyridoxal, and pyridoxamine), folacin, vitamin B12, biotin, and pantothenic acid.
Which cells of our body are known as the protectors of the ' protectors of the human body ?
(A) red blood cells
(B) eosinophils
(C) Basophils
(D) White blood cells
What is the instrument used to measure low temperature called?
(A) Hygrometer
(B) Cryometer
(C) Pyrometer
(D) Tachometer
Waves used in radar systems are an example of which type of wave?
(A) micro waves
(B) infrared waves
(C) infrasonic waves
(D) none of these
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