4661. Short-sight defect could be corrected by a ________ lens? Long-sight defect could be corrected by using _____ lens?
✅ B. concave lens
Everyday Science MCQs – Page 234
4662. “Green House Effect” means:_______?
✅ C. Trapping of Solar energy due to atmospheric carbon dioxide
4663. The density of water is _____?
✅ B. 1 g/cm3
4664. Lactometer is a type of Hydrometer which is used to measure the specific gravity of ____?
✅ C. Milk
4665. Bt seed is associated with:______?
✅ C. Cotton
4666. Each day human body breathe in _____ liters of air.
✅ A. 10,000 to 15,000
4667. The name of the common mineral salt present in sweat is ?
✅ C. Sodium Chloride
4668. The most important stimulant in tea leaves is?
✅ A. Caffeine
4669. Eugenics is the study of_________?
✅ B. Altering human beings by changing their genetic components
4670. What is the molecular weight of Ammonia (NH3) ___ ?
✅ B. 17.031 g/mol
4671. Lactometer is used for_____?
✅ A. Milk
4672. All matter is made of ______?
✅ D. Atoms
4673. A person of which of the following blood groups is called a universal donor?
✅ B. O
4674. A wind which reverses seasonally is known as_____?
✅ C. Monsoon
4675. Density of Ice is____?
✅ A. 917kg/m3
4676. Ruby is an oxide of_____?
✅ D. aluminium oxide
4677. The number of electrons of a neutral atom is automatically known if one knows the?
✅ B. Atomic number
4678. A man can survive without food for at least?
✅ B. One month
4679. A slow-running pendulum clock can be speeded up by_____?
✅ C. Reducing the length of the rod
4680. What is the date when day and night are equal?
✅ C. March 20 and September 23