Science For You

[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

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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

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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

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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

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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

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Science

The red color of birds like flamingos is produced by
Pigment Zooerythrin

Which is the oldest known specimen of a toothless bird?
Ichthyornis

Penguins are found in
Antarctic ice fields only

Which heaviest bird ever to have existed?
Elephant bird

In birds, what is uncinate process?
An outer growth of the rib which strengthens the rib cage

If a bird is said to be ‘raptorial’, what kind is it?
Bird of prey

What is the name given to the song box of a bird?
Syrinx

What is the name given to the bastard wing?
To control turbulence and prevent stalling

What is the highest frequency which a bat can detect?
75 kHz
The word ‘mammal’ comes from a
Latin word ‘mamma’ meaning breast

What are a bird's wing flight feathers called ?
Remiges

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Science

Which mammal has a natural sun-burn lotion?
Hippopotamus

Mammals are divided into several orders. Which order includes the most advanced mammals?
Primates

The ouch in which a kangaroo mother keeps her young baby is called
Marsupium

Polar bears lives at
North pole only

Which order of mammals contains the bats?
Chiroptera

How many cavities does the stomach of a cow have?
Four

Which rare mammal has been slaughtered by villages because it feared as a harbinger of death?
Aye Aye

Which pigments are found in the red algae?
Phycoerythrin and Phycocyanin

Kelps are a kind of
Green Algae

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Science

Several algae are held to the bottom of a pond or sea by a structure known as
Holdfast

What is the name given to plant which can not grow on soil-rich in lime or calcium carbonate?
Calcifuge

Which pigment is present in brown algae?
Fucoxanthin

The wall of a true fruit is known as
Pericarp

The wood produced by gymnosperms is commercially known as
Softwood

What are Parthenocarpic fruits?
Fruits formed without fertilization

What is a ‘bedder’?
It is a plant suitable for a garden bed

Except tree ferns, most ferns have rhizomes. What are rhizomes?
Underground stems

The way in which leaves are arranged on a stem is known as
Phyllotaxy

Which plant tissue is mainly concerned with the transport of water and minerals?
Xylem

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Through which tissue of plant is food and other organic substances translocated?
Phloem

Which plant has the distinction of bearing the biggest seed?
Coco demer

With a growth rate of about 5 mm a minute, it is one of the fastest growing organism in the world. It is also known as ‘the lady of the white veil’. Identify it?
Stinkhorn fungus

Adventitious roots are…..
Roots arising in places other than the root system

what are the taproots?
A root system, on which there is one major root with other roots branching of it

A root system composed mainly of branches rather than one of principal root is known as Fibrous root system

Which are the earliest plants of bear seeds?
Gymnosperms

Which are the earliest plants to have a conduction system for conduction of water and food?
Ferns

What is the name of the plant whose berries are used to make gin?
Juniperus

Small plants with soft stem are called
Herbs

Medium-sized plants with woody stems that branch profusely from the base and attain a bushy appearance are called
Shrubs