General Science MCQs:

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"The past has no power over the present moment."

― Eckhart Tolle

Science-General Science-Multiple Choise Questions and Answers

প্রতিটি প্রশ্নের জন্য চারটি করে উত্তর থাকবে যার একটি সঠিক, বামদিকে A, B, C এবং D এর উপর ক্লিক করে সঠিক উত্তরটি দেখতে পারেন। যদি উত্তর সঠিক হয় তবে অপশনটির ডান দিকে টিক () আর উত্তর ভূল হলে ক্রস () চিনহ প্রদ্ররশিত হবে।

# 31. Which of the following salts is insoluble in water?

A.

Barium chloride

B.

Ammonium carbonate

C.

Zinc sulfide

D.

Potassium phosphate

# 32. Which from the following is NOT a method of heat transfer?

A.

Radiation

B.

Convection

C.

Conduction

D.

All are methods of heat transfer

# 33. The disease diphtheria affects.

A.

Lungs

B.

Throat

C.

Heart

D.

All of these

# 34. Which one of the following types of Laser is used in Laser Printers?

A.

Semiconductor laser

B.

Dey laser

C.

Gas laser

D.

Excimer laser

# 35. 'Penicillin' which is used as an antibiotic is obtained from:

A.

Algae

B.

Virus

C.

Fungi

D.

Bacteria

# 36. Potassium Permanganate is used for purifying drinking water, because

A.

it dissolves the impurities of water

B.

it is an oxidising agent

C.

it is a sterilising agent

D.

it is a reducing agent

# 37. Bronze is an alloy of

A.

Nickel, Zinc

B.

Carbon, Silver

C.

Mercury, Lead

D.

Copper, Tin

# 38. What is the reason for the blue color of the clear sky?

A.

Dispersion of light

B.

Diffraction of light

C.

Refraction of light

D.

Reflection of light

# 39. Which one of the following acid is the chemical name of Vitamin C?

A.

Tartaric

B.

Ascorbic

C.

Boric

D.

Oxalic

# 40. Which one of the following instrument that measures arterial blood pressure?

A.

Sphygmomanometer

B.

Sphygmoscope

C.

Hypsometer

D.

Pyknometer

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