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4

What is the unit for measuring the pitch or frequency of sound ?

A. Coulomb

B. Hum

C. Cycles

D. Decible

Correct Answer :

D. Decible


Related Questions

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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

Pollination by birds is called

A. autogamy

B. entomophily

C. anemophily

D. ornithophily

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4

Cell membrane is

A. permeable

B. semipermeable

C. selectively permeable

D. impermeable

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4

The metal used in storage batteries

A. Zinc

B. Iron

C. Copper

D. Lead

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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 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

The accumulation of stress along the boundaries of lithospheric plates results in which of the following?

A. Earthquakes

B. Magnetic reversals

C. Hurricanses

D. Increased deposition of deep-sea sediments

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4

The fastest-running terrestrial animal is

A. lion

B. man

C. jaguar

D. cheetah

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4

Nitrification means

A. Conversion of nitrogen to nitric acid.

B. Production of nitrogen from air

C. Convert the atmospheric nitrogen to effective nitrogen compound.

D. Liquifaction of nitrogen

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4

Glass is made from the mixture of

A. Quartz and mica

B. Sand and salt

C. Sand and silicates

D. None of these

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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

Polythene is industrially prepared by the polymerisation of

A. styrene

B. methane

C. ethylene

D. acetylene

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4

The hardest substance available on earth is

A. Platinum

B. Quartz

C. gold

D. Diamond

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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

The fastest acting enzyme in the biological kingdom is

A. amylase

B. lipase

C. carboxypeptidase

D. carbonic anhydrase

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4

According to Daltons atomic theory the smallest particle which can exist independently is

A. An atom

B. A cation

C. A molecule

D. An anion

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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

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4

The element present in the largest amount in rocks and minerals is

A. Carbon

B. Hydrogen

C. Aluminium

D. Silicon

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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

The Panda belongs to the same family as that of

A. Cat

B. Bear

C. Rabbit

D. Dog

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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 most important ore of Aluminium is

A. Calamine

B. Calcite

C. Galena

D. Bauxite

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4

The removal of top soil by water or wind is called

A. Soil erosion

B. Soil wash

C. Silting of soil

D. Soil creep

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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 major ingredient of leather is

A. Nucleic acid

B. Carbohydrate

C. Collagen

D. Polymer

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4

Liquefied Petroleum gas (LPG) consists of mainly

A. Methane, Butane and Propane

B. Methane, Ethane and Hexane

C. Ethane, Hexane and Nonane

D. Methane, Hexane and Nonane

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4

Which of the following items will be attracted to the north pole of a permanent magnet by a magnet force?

A. A piece of iron that is not a permanent magnet

B. The north pole of another permanent magnet

C. A positively charged glass rod

D. A negatively charged rubber rod

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4

Apparatus invented by Archimedes is :

A. Pulley

B. Microscope

C. Thermemoter

D. Barometer

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4

The location and energy of an electron in an atom can be specified by

A. Atomic number

B. Atomic mass

C. Quantum numbers

D. None of these

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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