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You Are On Question Answer Bank SET 1970

98501. What is cerebrum?

Answer: The cerebrum is the main part of the brain and controls the ability to think. The cerebrum receives impulses and directs the body into activity.

98502. What is Hypothermia?

Answer: It is a body condition in which the temperature falls suddenly as a result of exposure to extreme cold.

98503. Who discovered the laws of planetary motion?

Answer: Johannes Kepler - Sir Isaac Newton later used these laws as the basis of his law of Universal Gravitation.

98504. How do fireflies produce light?

Answer: There are proteins in the body of fireflies that produce light, when they get oxidized in the presence of the enzyme, Luciferase.

98505. How much time does Pluto take to complete a revolution around the sun?

Answer: 248 years.

98506. Who first introduced vaccination in medical practice?

Answer: Edward Jenner.

98507. How do insects breathe?

Answer: Insects breathe through the tiny holes in their body.

98508. What is the Archimedes Principle?

Answer: It is a law of physics that states that when an object is totally or partially immersed in a fluid, it experiences an upward thrust equal to the weight of the fluid displaced. The principle is most frequently applied to the behaviour of objects in water, and helps to explain floating and sinking and why objects seem lighter in water.

98509. The instrument that records the intensity of earthquakes is

Answer: Seismograph

98510. How many eggs does a starfish lay at a time?

Answer: Millions.

98511. The symbol of silver is

Answer: Ag

98512. How is the glow of a firefly caused?

Answer: When certain proteins get oxidised, in the presence of an enzyme called luciferase, light is produced. Fireflies have special light organs on the underside of the abdomen. Here in the presence of luciferase, light is produced.

98513. Who invented the Barometer?

Answer: Evangelista Torricelli.

98514. The acid used in a car battery is

Answer: Sulphuric acid

98515. What is meant by the term 'freezing point'?

Answer: The temperature at which a liquid changes to the solid state is called freezing point.

98516. How are motion pictures made?

Answer: When the eyes see an image, they hold onto it in the form of a visual memory for a fraction of a second after it is gone. In a motion picture, the projector flashes still pictures quickly in succession. The usual numbers of pictures that are projected per second are 24. Because of persistence of vision, the picture seems to be one continuous moving picture.

98517. Which animal has the longest life span?

Answer: Tortoise.

98518. Al stands for

Answer: Aluminium

98519. Which Vitamin helps in preventing rickets?

Answer: Vitamin D.

98520. Which is the brightest star in the sky at night?

Answer: Sinus.

98521. What is an antiseptic?

Answer: It is a chemical used to kill germs on the skin or in the wounds. It is also used on things people handle.

98522. Which part of the plant do you eat when you eat carrots?

Answer: Roots.

98523. What is the meaning of the word Tanning'?

Answer: Converting raw animal skin into leather.

98524. From which ore is Aluminium made?

Answer: Bauxite.

98525. How does a cricket produce the chirping sound?

Answer: By rubbing its legs against one of its front wings.

98526. What is the chemical name of baking soda?

Answer: Sodium Bicarbonate.
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