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Which of the following elements is obtained from sea weeds ?

A. Argon

B. Vanadium

C. Iodine

D. Sulphur

Correct Answer :

C. Iodine


Related Questions

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4

The formula of Plaster of Paris is

A. 2CaSO4, H2O

B. CaSO4

C. CaSO4, 2H2O

D. 2CaSO4, 4H2O

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4

One fathom is equal to

A. 6 feet

B. 6 metres

C. 60 cms

D. 60 feet

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4

Epoxy resins is used as

A. Adhesives

B. Detergents

C. Insecticides

D. Moth repellants

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4

Permanent hardness of water can be removed by adding

A. Potassium Permanganate

B. Bleaching Powder

C. Chlorine

D. Washing Soda

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4

In an atomic nucleus, neutrons and protons are held together by

A. Magnetic forces

B. Gravitational forces

C. Coulombic forces

D. Exchange forces

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4

The type of glass used in making prisms and lenses is

A. Pyrex glass

B. Soft glass

C. Flint glass

D. Jena glass

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4

The marine animal called dugong which is vulnerable to extinction is a/an

A. Amphibian

B. Shark

C. Bony fish

D. Mammal

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4

The chemial name of Uria is

A. Carbamide

B. Chloroetane

C. Aneurin

D. None of these

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4

The Panda belongs to the same family as that of

A. Cat

B. Bear

C. Rabbit

D. Dog

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4

The recent atomic weight scale is based on

A. 1H1

B. 1H2

C. 6C12

D. 8O16

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4

The colour of Emerald is

A. Deep Green

B. Violet

C. Prussian Blue

D. Yellow

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4

In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If both inputs are positive the output is zero. This is

A. an AND circuit

B. an OR circuit

C. a high-pass filter

D. a NOR circuit

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4

Which of the following elements is a metal

A. S

B. Ga

C. Se

D. I

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4

Which of the following characters is not shown by hydrogen

A. It burns in air to form water

B. It supports combustion

C. It readily combines with fluorine and chlorine

D. It combines with almost all metals forming hydrides

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4

Water has maximum density at

A. 0°C

B. -4°C

C. 100°C

D. 4°C

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4

Cell membrane is

A. permeable

B. semipermeable

C. selectively permeable

D. impermeable

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4

Which of the following is the lightest metal ?

A. Mercury

B. Lithium

C. Lead

D. Silver

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4

When a gas is turned into a liquid, the process is called

A. evaporation

B. condensation

C. sublimation

D. deposition

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4

The intencity of Earthquakes is measured on

A. Beaufort scale

B. Secant scale

C. Mercalli scale

D. Richter scale

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4

The metal that is present in Photo Films is

A. Silver

B. Magnesium

C. Platinium

D. Mercury

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4

Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere in future?

A. Atomic warfare

B. Depletion of earth's ozone layer

C. CO2 from fossil fuels

D. Dust clouds from valcanoes

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4

Earth's seasons are caused by which of the following?

A. The varying amount of sunspot activity

B. The tilt of the earth's rotation relative to the ecliptic as earth revolves around the sun

C. The earth's orbit around the sun as an exlipse rather than a circle

D. The rotation of during a 24-hour day

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4

Quartz crystals normally used in quartz clocks etc. is chemically

A. A mixture of B and C

B. Silicon dioxide

C. Germenium dioxide

D. Sodium Silicate

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4

Which of the following parts of the sun is easily visible only during a total solar eclipse?

A. core

B. photosphere

C. sunspots

D. corona

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4

The speed of light with the rise in the temperature of the medium

A. Increases

B. Remains unaltered

C. Drops sharply

D. Decreases

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4

Old-written material, which cannot be read easily can be read by

A. None of these

B. Ultraviolet rays

C. Infra Red rays

D. Cosmic Rays

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4

Which of the following elements is obtained from sea weeds ?

A. Argon

B. Vanadium

C. Iodine

D. Sulphur

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4

Which of the following elements is non-radioactive?

A. Uranium

B. Plutonium

C. Thorium

D. Zirconium

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4

The solar eclipse occurs when

A. the sun comes in between the moon and the earth

B. the moon comes in between the sun and the earth

C. the earth comes in the between the sun and the moon

D. None of the above

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4

Lightening cause rainfall because

A. It activate H2O molecule

B. Photo-electricity reaction starts

C. Some of the gas molecules become bigger

D. It cause combination of oxygen and nitrogen