Sea water (Salt water) freezes at ...? Mcqs

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Sea water (Salt water) freezes at ...?

(A) Same temperature as fresh water.
(B) Slightly higher temperatures than fresh water.

(C) Slightly higher temperature than fresh water.
(D) Sea water does not freeze

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An atom is_____________...?

(A) smallest indivisible particle in an element
(B) smallest particle of an element which can undergo a chemical reaction

(C) building block of an element
(D) always smaller than molecule

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What is meant by intermediate goods and services...?

(A) The same as capital goods, such as plants, buildings, vehicles, and machinery.
(B) Products which one firm buys off another and then uses up in its own products.

(C) All inputs bought by firms, including labor and raw materials.
(D) Imports.

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In winter an iron pipe feel colder than a wooden window . This is because wood is_______...?

(A) Conductor
(B) Non-Conductor

(C) Semi- Conductor
(D) Not a solid while iron is a solid

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Which one of the following waves are used by the common TV remote control...?

(A) Radio waves
(B) Lasers

(C) Infrared waves
(D) Ultrasonic waves

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Water vapour turns into clouds in the atmosphere when:...?

(A) It rains
(B) The temperature rise

(C) Dew point is reached
(D) Evaporation takes place

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What is the effect of height increase over temperature...?

(A) Temperature increase
(B) Temperature decrease

(C) Remains constant
(D) None

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The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from____________ ...?

(A) Ionosphere
(B) Troposphere

(C) Mesosphere
(D) Stratosphere

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DNA is _____________...?

(A) Acetic Acid
(B) A class of nucleic acids

(C) Citric Acid
(D) None of these

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From among the following, which material is insoluble in water...?

(A) Sand
(B) Sugar

(C) Glucose
(D) Salt

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