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Sunday, December 1, 2019

SCIENCE (CHEMISTRY )

🔰SCIENCE (CHEMISTRY )

✅️. Gases used in welding are ___? – Acetylene & Oxygen
✅️ Gases used by sea divers for breathing are ____? – Oxygen & Helium
✅️. Best sources for Vitamin D are? – Sunlight & Fish liver
✅️Zinc Phosphide is used as? – Rat Poison
✅️. Fuse wire is made up of __ – Lead and Tin
✅️Purest form of Iron is? – Wrought Iron
✅️ Radium is extracted from __ . – Pitchblende
✅️ Which agent is as ‘seed’ in artificial rain? – Silver Iodide
✅️. Oxides of metals are __ . – Alkaline
✅️ During the process of ‘rusting’ , the weight of iron __ . –Increases
✅️______ (metal) is liquid at room temperature. – Gallium
✅️ What is the formula of common salt – NaCl
✅️. What is the maximum number of electrons that a p-orbital can hold – 6
✅️. What is used in fire extinguisher – Sodium bicarbonate
✅️ What is the nature of metal oxides – Basic
✅️. Which gas burns with popping sound – Hydrogen
✅️ Which metal is used for galvanization – Zinc
✅️. What is the nature of bleaching powder – Oxidising agent
✅️ Which is stored in Kerosene – Sodium
✅️ Phenolphthalein gives which color in acidic medium – Colorless
✅️ Which gas is used in cigarette lighters? – Butane
✅️. Biogas chiefly contains __ . – Methane
✅️. Chemical used as fixer in Photography is __ . – Sodium thiosulphate
✅️Aspirin is __ . – Acetyl Salicylic Acid
✅️_ is also known as ‘Stranger Gas.’ – Xenon
✅️ Natural rubber is a polymer derived from __. – Isoprene

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👍👍UPCOMING SCIENCE ASO EBO

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