601. Each day human body breathe in _____ liters of air.
✅ A. 10,000 to 15,000
Everyday Science MCQs – Page 31
602. The name of the common mineral salt present in sweat is ?
✅ C. Sodium Chloride
603. The most important stimulant in tea leaves is?
✅ A. Caffeine
604. Eugenics is the study of_________?
✅ B. Altering human beings by changing their genetic components
605. What is the molecular weight of Ammonia (NH3) ___ ?
✅ B. 17.031 g/mol
606. Lactometer is used for_____?
✅ A. Milk
607. All matter is made of ______?
✅ D. Atoms
608. A person of which of the following blood groups is called a universal donor?
✅ B. O
609. A wind which reverses seasonally is known as_____?
✅ C. Monsoon
610. Density of Ice is____?
✅ A. 917kg/m3
611. Ruby is an oxide of_____?
✅ D. aluminium oxide
612. The number of electrons of a neutral atom is automatically known if one knows the?
✅ B. Atomic number
613. A man can survive without food for at least?
✅ B. One month
614. A slow-running pendulum clock can be speeded up by_____?
✅ C. Reducing the length of the rod
615. What is the date when day and night are equal?
✅ C. March 20 and September 23
616. The only living cells in the body without blood supply is______?
✅ C. Cornea
617. The Sun is a _____?
✅ B. Star
618. The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is ___ ?
✅ C. Helium
619. The earth’s atmosphere is divided into layers based on the vertical profile of _____?
✅ A. Air temperature
620. Water is a highly effective coolant for a car engine because ____?
✅ A. Water has very high specific heat capacity