What is the major component that is present in stainless steel?

Copper is found as the main mineral in basaltic lavas and as a reduced form of copper.

Sodium _____ is much less reactive than sodium.

Which of the following has the mass number as 63.54 amu ?

Compounds of silver, such as silver chloride and silver iodide are used in ___________.

Which of the following element is used in making jewellery ?

Select the correct properties of stainless steel.

Select the alloy that is used for developing castings for the firearm chamber.

Select the correct option for the alloy of iron.

In the container, the contaminants are left behind. After that, the steam is transferred via a condenser, where it cools and returns to liquid water in the process of distillation.

• Condenser is used to pass steam, where it cools and returns to liquid water in the container.
• The process used is called as distillation.

Electric water filter consists of ________. (understand)

• Microporous filter contains tiny pores which filter suspended solids from water.

Pick the odd one out. (analyze)

• All the other options are methods to separate water.
• Only chlorination is the method to purify water.

Water collected from the river is made free of large pieces of dirt and pumped into reservoirs, then passed to ____________ tank, which helps in forming lumps of particles for their easy removal. (analyze)

• First of all large wastes are removed from water in sewage water treatment.
• Then it is passed to flocculation tanks from water reservoirs to remove impurities in the form of lumps of particles.

Analyze the process of water purification in which water is passed through a filter bed to remove all insoluble impurities. (analyze)

• Filter bed used in water purification have high absorbing and adsorbing capacity.
• It purify the water by removing all insoluble impurities of water.

The various stages of cleaning wastewater in a sewage treatment plant are as follows. Select the stages in chronological order. (create)
A. Wastewater goes to a grit and sand removal tank.
B. The water is allowed to settle in a large tank which is sloped towards the middle.
C. Air is pumped into the clarified water to help aerobic bacteria to grow.
D. Wastewater is passed through bar screens. Large objects like plastics, cans, rags, sticks, napkins, etc., are removed.

• Aerobic bacteria helps to remove smallest waste particles from water as they feed on that.

The water we drink in our homes is usually contaminated with suspended pollutants like_____________. (analyze)

• Our drinking water contains so many pollutants in it like clay, slit and sand particles.
• To clean or purify the water in some homes , filters are used like R.O.