Green, blue, and red are the primary colors of light in physics. A mixture of two can primary colors of light can make yellow, magenta, or other secondary colors. These colors are called primary because they are the basis of other colors and are not made up by mixing of two colors.Hence, the correct answer is B

ADDITIONAL INFORMATION

A mixture is made when two or more substances are combined, but they are not combined chemically. General properties of a mixture:

● The components of a mixture can be easily separated.

● The components each keep their original properties.

Solution: A lysosome is a membrane-bound cell organelle that contains digestive enzymes. Lysosomes are involved with various cell processes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria. If the cell is damaged beyond repair, lysosomes can help it to self-destruct in a process called programmed cell death, or apoptosis. Hence, option C is correct.

ADDITIONAL INFORMATION: Mitochondria Known as the “powerhouses of the cell,” mitochondria produce the energy necessary for the cell's survival and functioning.

Vacoule handle waste products, and by handle, mean take in waste products and also get rid of waste products.

Ribosomes assembles amino acids to form proteins that are essential to carry out cellular functions.

If a soft iron bar is inserted inside the solenoid, the magnetic field will increase because when current passes around it, the iron bar gets magnetized and achieve magnetic properties and it loses the magnetic properties as the current is switched off.

Hence the correct option is D.

ADDITIONAL INFORMATION

* The magnetic field inside the solenoid is uniform as these field lines are equally spaced and parallel inside circular curves of solenoid.

* The current-carrying solenoid behaves like a bar magnet when a steady current flows through it, the solenoid produced magnetic fields like the magnetic field produced by a bar magnet.

* The magnetic field inside the solenoid increases with increase in current by adding more turns to the coil of the current carrying wire and increases the strength of the field by increasing the amount of current.