Science For You

[Perfection]

What is called sugar of lead ?
Lead acetate

What is Paris Green ?
Double salt of Copper acetate and Copper arsenite


What is oil of vitriol ?
Sulphuric acid

What is agate ?
Naturally occurring silica

What is carborundum ?
Silicon Carbide

What is milk of lime ?
Calcium Hydroxide

What is absolute alcohol ?
99% Ethyl alcohol

What is Mohr's salt ?
Ferrous ammonium sulphate

What is water gas ?
Mixture of Carbon monoxide and hydrogen

What is dry ice ?
Solid Carbon dioxide

[Perfection]

Who discovered electrons
J.J. Thomson

Who stated the uncertainty principle ?
W Heisenberg

Who discovered X rays ?
WK Roentgen

What is the expansion of LASER ?
Light Amplification by Stimulated Emission of Radiation

Name the particle that has the highest velocity ?
Photon

Who discovered neutrons ?
J Chadwick

What is Zeeman effect ?
Splitting of spectral lines by magnetic field

What is the instrument is used to measure the atmospheric pressure ?
Barometer

What is the SI unit of pressure ?
Pascal (Pa)

What is the melting point of ice in Kelvin ?
273 K

[Perfection]

Who suggested the absolute scale of temperature ?
Lord Kelvin

Name the property that depends on the number of particles ?
Colligative property

What is a gel ?
Colloidal solution of liquid in solid

What is the unit of protective capacity of a hydrophilic solution ?
Gold number

Name a nuclei used to make Atom bomb ?
Uranium 235

What is the unit of radioactivity ?
Curie

What is the SI unit of heat ?
Joule

Which gas is produced in Haber's process ?
Ammonia (NH3)

What is an amphiprotic substance ?
Substance which act as an acid and base

What is the basis for modern classification of the elements ?
Atomic Number

[minisoji]

Science

Quadruped and biped are familiar terms but what is a ‘palmiped’?
Any bird with webbed feet

Who was the first scientist to classify fossils?
George Cuvier

What is Aristotle’s lantern?
A special arrangement of teeth in sea urchins

Which fossil organism is usually regarded as the connecting link between reptiles and birds ?
Archaeopteryx

Which was the heaviest of all prehistoric animals?
Brachiosaurus

Who is usually considered to be the founder of modern entomology?
Jan swammerdam

Which was the first dinosaur to be scientifically described?
Megalosaurus

Which animal generally considered as connecting link between the annelid worms and the arthropods?
Peripatus

The largest living terrestrial mammal is the African elephant. Which is the largest terrestrial mammal ever to roam the earth?
Baluchitherium grangeri

Which are the most primitive multi-cellular animals?
Sponges

'Proboscis worms’ are also known as
Ribbon worms

[minisoji]

Science

Which are the simplest animals to have a nervous system and a gut?
Cnidarians

Which are the simplest three layered animals alive today?
Flat worms

Gordian worms are also known as
Hair worms

The name of which phylum is derived from a Greek word meaning ‘Sea nymph’?
Nemertinea

Which animal has only one opening which serves both as mouth and anus?
Cnidarians

What are the stinging cells on the tentacles of corals, sea anemones, jelly fish and hydra called?
Nematocysts

What are the soft internal partitions of a coral polyp or sea anemone called?
Mesenteries

Which simple animals has helped the scientist to deduce that there were 400 days in a year, 300 million years ago?
Coral

Corals are best known for the massive ‘rocky’ reefs they built in the tropics. Which is the largest such reef made by them?
Great Barrier Reef

Why are ‘soft’ corals so colorful?
Because of colored rods or spines in their tissues

[minisoji]

Science

Which are generally considered to be the loudest of all insects?
Male Cicadas

Which is the longest insect in the world?
Tropical stick insect

The production of sounds by some insects by rubbing together parts of body, usually to attract a female is known as
Stridulation

Which are generally considered to be longest lived insects?
Queen termites

Which period is usually known as the age of fishes?
Devonian period

What is the staple diet of a basking shark?
Plankton

Pelagic fish live
Near the top of the sea

Most sharks are heavier than water. How to they prevent themselves from sinking?
By movement through the water

What is the largest amphibian in the world?
Chinese Giant salamander

Which snake kills its prey by constriction?
Python

What is the swim bladder in a bony fish used for ?
Buoyancy

[minisoji]

Scince

Which snake has a fang which can be swivelled to lie flat in the mouth when not in use?
Pit viper

Which is the largest living member of the crocodile family?
Estuarine crocodile

How does the male snake locate the female for breeding?
By smell

Which is the only snake to built a nest?
King Cobra

Which is the longest venomous snake in the world?
King Cobra

The lizard living in desserts of Australia has a curious ability to use rare rain water. The rain water does not pass through the skin but blows in minute channels along it, until it reaches the mouth where it is swallowed! Name this lizard?
Moloch

Which is the largest living bird?
Ostrich

Which is the smallest flightless bird?
Flightless rail

Which is the generally reputed to be the smallest bird in the world?
Helena’s humming bird

Which bird has the highest energy consumption per unit of weight?
Humming bird