ExamVeda
Login
Home

Practice MCQ Questions and answers on General Science-GK

Learn and practice General Knowledge questions and answers on General Science with very easy and understandable explanations. GK questions are very helpful different type of competitive exams. Page-7 section-1

Each section contains 100 MCQs on General Science .
61
Amalgams are:
Discuss
Answer & Solution
Answer: Option B
Solution:

Alloys which contain mercury as one of the contents.

62
Which of the following is the lightest metal?
Discuss
Answer & Solution
Answer: Option B
Solution:
Lithium is the lightest metal of the following.
63
Which of the following metals remain in liquid for under normal conditions?
Discuss
Answer & Solution
Answer: Option D
Solution:
Mercury remains in liquid form under normal conditions. Mercury remains in the form of liquid in room temperature.
64
Potassium Permanganate is used for purifying drinking water, because
Discuss
Answer & Solution
Answer: Option D
Solution:
Potassium permanganate is a point-of-entry treatment method that oxidizes dissolved iron, manganese, and hydrogen sulfide into solid particles that are filtered out of the water. It can also be used to control iron bacteria growth in wells.
65
Which of the following is an element?
Discuss
Answer & Solution
Answer: Option D
Solution:
Here in the given options, Diamond is an element as it is the allotrope of the carbon atom.
66
What is the unit for measuring the amplitude of a sound?
Discuss
Answer & Solution
Answer: Option A
Solution:
Amplitude measures how forceful the wave is. It is measured in decibels or dBA of sound pressure. 0 dBA is the softest level that a person can hear. Normal speaking voices are around 65 dBA.
67
Reading of a barometer going down is an indication of
Discuss
Answer & Solution
Answer: Option D
Solution:
Reading of a barometer going down is an indication of rainfall.
68
Decibel is the unit for
Discuss
Answer & Solution
Answer: Option C
Solution:
Decibel is the unit for Intensity of sound.
69
One fathom is equal to
Discuss
Answer & Solution
Answer: Option A
Solution:
A fathom is a unit of length in the imperial and the U.S. customary systems equal to 6 feet (1.8288 m), used especially for measuring the depth of water.
70
Fathom is the unit of
Discuss
Answer & Solution
Answer: Option B
Solution:
Fathom, old English measure of length, now standardized at 6 feet (1.83 metre), which has long been used as a nautical unit of depth.