Questions

The organ which filters blood in human body are kidneys.

The largest proportion of federal revenues comes from personal income taxes. Almost half of all federal revenue (47 percent) comes from individual income taxes.

The main function of the pulmonary alveoli is to perform the transfer and exchange of gases. Here in the given options, blood is only one which is not gas.

Hence, blood is not transferred by alveoli.

All the above will stay where they are when they goes off. Basically anything that can swithch on or off will come under this.

Light travels Faster than Sound.

Light :

1. Light doesn't require a medium to travel.

2. It travels in the vaccum with the speed of 1,86,000 miles per second.

Sound:

1. Sound rquire a medium.

2. It travels in the Air with the speed of 340 meters per second.

3. It travels Faster in Water than in Air.

4. It travels Faster in Steel than in Water.