Phosphorus is mainly extracted from January 31, 2022January 31, 2022 administrator A. SandB. AshC. Bone ashD. Fertiliser Share the Post Share the Post
The oil used in the froth floatation process is January 31, 2022January 31, 2022 administrator A. Coconut oilB. Olive oilC. KeroseneD. Pine Oil Share the Post Share the Post
The material that can be deformed permanently by heat and pressure is called a January 31, 2022January 31, 2022 administrator A. ThermosetB. ThermoplasticC. Chemical CompoundD. Polymer Share the Post Share the Post
Mass number of a nucleus is January 31, 2022January 31, 2022 administrator A. the sum of the number of neutrons and protonsB. always more than the atomic weightC. always less than its atomic numberD. None of these Share the Post Share the Post
Due to rusting the weight of iron…. January 31, 2022January 31, 2022 administrator A. decreasesB. increasesC. remains the sameD. uncertain Share the Post Share the Post
When water is added to anhydrous white copper sulphate, the color will change to : January 31, 2022January 31, 2022 administrator A. YellowB. GreenC. BlueD. Red Share the Post Share the Post
Atmosphere contains dust particles, salt grains, pollen grains, smoke, etc. which are collectively known as : January 31, 2022January 31, 2022 administrator A. Water vapourB. OzoneC. AerosolsD. CFC Share the Post Share the Post
Supersonic Aircrafts discharge the following substance into the statosphere: January 31, 2022January 31, 2022 administrator A. SO2B. CO2C. NO2D. CO Share the Post Share the Post
Heavy metal pollution of water is caused by : January 31, 2022January 31, 2022 administrator A. Acid PlantsB. PaintsC. Wood BurningD. Domestic Sewage Share the Post Share the Post
Which of the Carbon Compounds is used as fire extinguisher ? January 31, 2022January 31, 2022 administrator A. CS2B. CHCl3C. CH3ClD. CCl4 Share the Post Share the Post