KNOW ABOUT SCI. & TECH.

Q.1- The unit of electrical resistance of a conductor is …………………?

Q.2- The scientific name of ‘Pearl ash’ is ………………..?

Q.3- Phenol formaldehyde resins is also known as………….?

• C2 CO3

• Suger

• Bakelite

• H2 CO2

Q.4- Green colour in fireworks is caused due to ……………..?

• Barium

• Sodium

• Phosphorous

• helium

Q.5- Which vitamins are soluble in water……………….?

• Vitamin A and Vitamin B

• Vitamin B and Vitamin D

• Vitamin A and Vitamin C

• Vitamin B and Vitamin C

Q.6- ‘Ethylene’ is a hormone found in…………..?

Q.7- Blood group ‘AB’ is called universal receptor because it does not contain any………….?

Q.8- Which blood group is called universal donor because it does not contain any ‘antigen’ ………………….?

• Blood group B

• Blood group A

• Blood group O

• Blood group AB

Q.9- ‘Peptone’ and Peptide’ are examples of …………..?

Q.10- Which part of body is affected by Trachoma disease……………?

• Eyes

• Nose

• Tongue

• Ear