Which of the following statements is ul(...

Which of the following statements is `ul("not true")` for scattering of light?

Colour of the scattered light depends on the size of particles of the atmosphere.

Red light is least scattered in the atmosphere.

Scattering of light takes place as various colours of white light travel with different speed in air.

The find particles in the atmospheric air scatter the blue light more strongly than red. So the scattered blue light enters our eyes.

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Which of the following statements is true?

`NaHCO_(3)` is strongly basic in nature

Pure NaCl is hygroscopic

On increasing temperature increase in solubility of NaCl in water occurs

All of these

All chordates are vertebrates

All vertebrates are chordates

Non-chordates have a vertbral column

Invertebrates possess a tubular nerve cord

Melamine formaldehyde is used for making electrical switches.

Plasticizers are substances which are used to make plastic soft.

Nylon-6 is a biodegradable semi synthetic polymer.

In the manufacture of ebonite, 5% of sulphur is used as a cross-linking agent.