Every Day Science Section-3 | Multiple Questions and Answers

6.	Which one of the following elements the drum of a Photostat machine is made up of:

	A.	Aluminium
	B.	Selenium
	C.	Barium
	D.	Caesium

7.	The most important stimulant in tea leaves is:

	A.	Brucine
	B.	Caffeine
	C.	Phenylalanine
	D.	None of these

8.	Which part of the camera is analogue to the retina in the human eye?

	A.	Lens
	B.	Film
	C.	Shutter
	D.	None of these

9.	When a person enters a dark room from bright light he is not able to see clearly for a little while because the:

	A.	Eye is unable to adjust itself immediately
	B.	Retina becomes insensitive momentarily
	C.	Iris is unable to dilate the pupil immediately
	D.	None of these