661. At what temperature does silver melt?
✅ C. 961.8 °C
Everyday Science MCQs – Page 34
662. Which of the following has not involuntary muscles?
✅ D. Brains
663. Which of the following is a Non Metal that remains Liquid at room temperature?
✅ A. Bromine
664. Which one of the following is a non-metallic mineral?
✅ C. Gypsum
665. One Joule is equal to_____?
✅ C. 107 ergs
666. The best conductor of heat among liquid is______?
✅ A. Mercury
667. Magnifying power of a simple microscope can be increased by ?
✅ A. Decreasing focal length of the lens
668. The Big Dipper is part of which constellation?
✅ A. Ursa Minor
669. What type of a mirror is used in anti-shop-lifting-devices?
✅ B. Convex mirror
670. The rear view mirror of a motor vehicle is ___?
✅ C. Convex
671. Which is the heaviest metal?
✅ D. Osmium
672. The yellow colour in photochemical smog is due to the presence of_______?
✅ C. Nitrogen dioxide
673. Which of the following atmospheric layers help in radio communication?
✅ A. Ionosphere
674. The Continent Antarctica lies at the_____?
✅ A. South pole
675. The study of cancer is called________?
✅ D. Oncology
676. Which is the purest form of water?
✅ B. Rain water
677. The PH of milk is _____?
✅ A. 6.5
678. The blueness of the sky is mainly due to ________?
✅ B. The scattering of sunlight by air molecules
679. Diamonds are made up almost entirely of what element?
✅ B. Carbon
680. In general, wind speed of 10 -13 kph caused__?
✅ B. minor or no damage