Science MCQs
Brass is a mixture of which two metals? Nickel and Copper Copper and Zinc - Copper and Lead Tin and Lead
Brass gets discoloured in air because of the presence of which of the
following gases in air?
Oxygen Hydrogen sulphide - Carbon dioxide Nitrogen Bromine is a black solid red liquid - colourless gas highly inflammable gas Chemical formula for water is NaAlO 2 H 2 O - Al 2 O 3 CaSiO 3
Chlorophyll is a naturally occurring chelate compound in which central metal
is
Copper Magnesium - Iron Calcium Ecology deals with Birds Cell formation Relation between organisms and their environment - Tissues Energy is measured in the same units as Motion Work - Efficiency Power Entomology is the science that studies [CMAT 2020] The origin and history of technical and scientific terms Behavior of human beings Insects - The formation of rocks For galvanizing iron which of the following metals is used? Aluminium Copper Lead Zinc - For purifying drinking water alum is used for coagulation of mud particles - to kill bacteria to remove salts to remo…
