TS SI Mains 2018 General Awareness

A polymer that softens on heating and hardens on cooling is known as a thermoplastic. Which one of the following is the example for thermoplastics ?

Statement (A) : Silver and copper are good conductors of electricity.
Statement (B) : Glass and rubber are insulators of electricity.
The correct answer is :

The optical instrument that is used by Army personnel to sec their enemies while hiding themselves is:

The principle involved in the motion of a rocket is :

Superphosphate of lime which is used as a fertilizer is

Which among the following is an amphoteric oxide (which behaves acidic as well as basic) ?

Match the following chemicals with its applications:

The correct answer is:

Assertion (A) : Oils are generally liquids at room temperature.
Reason (R) : Oils contain unsaturated fatty acids.
The correct answer is:

Which one ofthe following levels of carbon monoxide present in atmosphere (in ppm)leads to instant death of human beings ?

Which of the following statements are correct ?
a. Melamine polymer is used in the manufacture of unbreakable crockery.
b. Enzymes are biocatalysts.
c. DNA fingerprinting is used for identification of criminals.
d. Tincture of iodine is an antiseptic.