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Learn SSC CGL MCQs with answers [Page 1 of Department 105]
1) Wall clock gains 2 minutes in 12 hours, while a table clock loses 2 minutes every 36 hours. Both are set right at 12 noon on Tuesday. The correct time when both show the same time next would be
(A) 12:30 at night, after 130 days
(B) 12 noon, after 135 days
(C) 12 midnight after 135 days
(D) 1:30 at nights, after 130 days
Correct Answer - Option
(B)
Explanation :
After 12 days, i.e., after 12 × 24 hours clock A will gain 48 minutes and will show 12:48 noon.
After 12 days, i.e., after 12 × 24 hours clock B will lose 16 minutes and will show 11:44 am.
The two clocks will show the same time after 135 days The time difference has to be 12 hours between then = 720 minutes.
A will gain 540 minutes in 135 days. B will lose 180 minutes in 135 days Total 720 minutes.
Further if we consider only time then the problem becomes simpler Total difference of minutes between the times shown by the clocks after 36 hours = 16/3
minutes difference in 1 day = 12 × 60 minutes difference in 3/16 × 12 × 60 = 135 days.
2) I have two watches with a 12 hour cycle. One of them gains one minute a day and the other loses 1 1/2 minute per day. If I set them both at the correct time, how long will it be before they again tell the correct time together?
Butter is a fat dispersed in milk. It is usually made from cow’s milk, but can also be manufactured from the milk of other mammals, including sheep, goats, buffalo, and yaks.
6) Where does the formation of Urea takes place in our body ?
(A) Pancreas
(B) Kidney
(C) Liver
(D) Lungs
Correct Answer - Option
(C)
Explanation :
The formation of Urea takes place in Liver. Urea which is also known as carbamide, is a waste product of many living organisms. It is the major organic component of human urine
The vertebral column usually consists of 33 vertebrae: 24 presacral vertebrae (7 cervical, 12 thoracic, and 5 lumbar) followed by the sacrum (5 fused sacral vertebrae) and the coccyx (4 frequently fused coccygeal vertebrae).
10) Which component in light causes suppression of melatonin produced by the pineal gland?
(A) Red
(B) Blue
(C) Green
(D) Indigo
Correct Answer - Option
(B)
Explanation :
Blue component in light causes suppression of melatonin produced by the pineal gland. Melatonin regulates the sleep–wake cycle. Natural levels of melatonin in the blood are highest at night.
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