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You Are On Question Answer Bank SET 1920

96001. Dactylography is the study of

Answer: Finger Prints

96002. How can lizards walk on walls?

Answer: The base of their paws has cuplike structures that stick to the walls. This enables them to move even on walls.

96003. What are isotopes?

Answer: Isotopes are different forms of an element with the same number of protons, but a varying number of neutrons in the nucleus of an atom. All elements consist of atoms. Atoms have a nucleus, which consists of proton or protons and neutrons. They usually have as many electrons as protons, continuously whirling around the nucleus. Hydrogen has two naturally existing isotopes - one with only a proton and no neutron in its nucleus and another with a neutron and a

96004. Who discovered the cause of malaria?

Answer: Ronald Ross.

96005. INSAT stands for

Answer: Indian National Satellite

96006. Mechanics is the study of

Answer: Forces acting on bodies

96007. Why do some people have fat legs?

Answer: The cause of filaria (elephant leg) are worms called Wuchereia bancrofti the female worm gives birth to young worms and not eggs. These young ones, called microfilaria, find the way into blood stream of their victims and from there into the lymphatic vessels. The immediate cause of filarial is a mosquito called culex.

96008. Which was the first living being to enter space?

Answer: A dog named Laika.

96009. What do elements consist of?

Answer: Positively charged protons, negatively charged electrons and neutrons, which have no charge.

96010. Who discovered radioactivity?

Answer: A.M. Becquerel.

96011. What is a desert?

Answer: A desert is a large area of land that is too dry to support life. Deserts are not always hot, dry or sandy. The tundras of Siberia (in Russia) are deserts. Water is frozen here and does not support life.

96012. The liquid used to preserve specimens of plans and animals is

Answer: Formalin

96013. The chemical formula of common salt is

Answer: Nacl

96014. What kind of leaves do silkworms thrive on?

Answer: Mulberry leaves.

96015. What is the fluid part of the blood called?

Answer: Plasma. It is about 90% water.

96016. How long do elephants live?

Answer: 65 to 100 years.

96017. What is a bone made up of?

Answer: Two-thirds of the bone is calcium phosphate. The other one-third is gelatin.

96018. How are volcanoes caused?

Answer: Deep under the crust of the earth is molten rock or lava, also called magma. It is under great pressure because of the intense heat around it and the weight of the earth's crust. When this hot boiling mass finds an outlet in the underside of the earth's crust, it comes through the surface as lava.

96019. When was the metric system introduced?

Answer: During the French revolution, France introduced the metric system. The standard of length was related to the dimensions of the earth rather than the dimensions of a human limb.

96020. What are the substances that can cause cancer called?

Answer: Carcinogens.

96021. What is meant by Acid Rain?

Answer: When there is a substantial amount of sulphur dioxide, carbon dioxide, etc in the rain, it is referrec to as acid rain.

96022. The arms of the Octopus have sucker cups. What is the use of these cups?

Answer: To hold onto a surface.

96023. What was called Penny-farthing?

Answer: The cycle whose front wheel was much larger than the rear wheel. It was invented by James Starley. It was derisively named penny-farthing after the largest and smallest English copper coins of the period.

96024. Why does a fire look yellowish, at times?

Answer: When the combustion (burning) is not complete the colour of fire becomes yellowish. When the combustion is complete, the colour changes to pale blue.

96025. Radium was discovered by

Answer: Marie and Pierrie Curie

96026. Why doesn't ice sink in water?

Answer: Ice is lighter than water. After the temperature of water cools down to 4° Celsius (instead of contracting) water keeps on expanding till it reaches 0° Celsius and becomes ice.

96027. What are the characteristics of a parasitic plant?

Answer: They cannot produce their own food and obtain food from other sources.
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