What force is involved when we rub our hands together to warm them in winter and when we rub a matchstick to ignite it...? Mcqs

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What force is involved when we rub our hands together to warm them in winter and when we rub a matchstick to ignite it...?

(A) Gravity
(B) Friction

(C) Electromagnetism
(D) Inertia

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The orbit of the Earth is an elongated circle is called...?

(A) Ellipse
(B) Parabola

(C) Hyperbola
(D) Oval

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kilohertz (kHz) is a unit which measures...?

(A) Power used by a current of one ampere
(B) Electromagnetic radio wave frequencies

(C) Voltage
(D) Electric resistance

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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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Which is the extension not suitable to an MS Word file...?

(A) .doc
(B) .rtf

(C) .docx
(D) .jpeg

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What are the three "R's" to remember about waste management...?

(A) Reduce, Reuse, and Recycle
(B) Remove, Return, and Relocate

(C) Refuse, Retrain, and Redeem
(D) None of these

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Which of the following flower is called Queen of Water...?

(A) Rose
(B) Lilly

(C) Rafflesia
(D) Tulip

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Short sightedness is due to__________...?

(A) Shifting of the iris
(B) Elongation of eyeballs

(C) Weakening of the retina
(D) Weaker muscles

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‘Christian Friedrich Schönbein’ discovery is___________...?

(A) Ozone
(B) Radium

(C) Cholorine
(D) Neutron

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Water soluble vitamins are released by__________...?

(A) Sweat
(B) Tears

(C) Injections
(D) Urine

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