Chemistry-Objective Related Question Answers
826. The most abundant metal in the earth’s crust?
Aluminium
827. Element having the highest electronegativity?
Fluorine
828. The lightest element known is?
Hydrogen
829. Name the element kept by covering with paraffin?
Lithium
830. Element used in the manufacture of insecticides?
Chlorine
831. Electro positive elements means:?
An atom that loses one or more electrons
832. Electro negative elements means:?
An atom that gains one or more electrons
833. The element contained in sea weeds?
Iodine
834. The element which is the enemy of copper?
Sulphur
835. Most abundant element present in our body?
Oxygen
836. Which element on adding to natural rubber makes it less sticky in hot weather and less hard in cold weather?
Sulphur
837. Which element can easily form chains?
Carbon
838. Which element in radioactive form is used for determining the age of artifacts; relics; bones etc of the past?
Carbon
839. Which element has no neutrons in it?
Hydrogen
840. Which element is used as an antiseptic?
Iodine
841. Which element is used in medicine; photography and making dyes; gives off a violet vapour when heated?
Iodine
842. Which is the most essential element for plant growth?
Nitrogen
843. Which element is highly present in sea cucumber?
Vanadium
844. Which element was named ‘inflammable air’?
Hydrogen
845. Which is the best conductor of electric current?
Silver
846. The main ores of Aluminium?
Bauxite and Cryolite
847. Metals extracted from sea water?
Magnesium and sodium
848. Major metals present in Chloroplast?
Magnesium; Manganese; Copper and Iron
849. Most abundant metal present in blood?
Potassium
850. The hardest metal is?
Chromium
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