351. Ultraviolet radiation in the stratosphere is absorbed by –
1. SO2
2. Ozone
3. Oxygen
4. Argon
Option “2” is correct Ultraviolet radiation in the stratosphere is absorbed by Ozone.
352. The tip of the match-stick contains –
1. Phosphorus pentoxide
2. White phosphorus
3. Red phosphorus
4. Phosphorus trichloride
Option “3” is correct The tip of the match stick contains Red Phosphorus.
353. The anode in a dry cell consists of –
1. Copper
2. Zinc
3. Cadmium
4. Graphite
Option “2” is correct The anode in a dry cell consists of Zinc.
354. Milk is an example of:
1. A gel
2. A foam
3. An emulsion
4. A suspension
Option “3” is correct An emulsion is a colloid of two or more immiscible liquids where one liquid contains a dispersion of the other liquids. Milk is an example of an emulsion.
355. CNG used in automobiles to check pollution mainly consists of-
1. CH4
2. CO2
3. N2
4. H2
Option “1” is correct CNG is made by compressed natural gas which is mainly composed of Methane (CH_4 ).
356. Which of the following is the procedure for a biogas plant-?
Option “4” is correct Nitrochloroform is used as anaesthertics before the operation of the patient to make them unconscious. Other options are explosive.
358. Which of the following is an anti-diabetic drug?
Option “1” is correct Insulin is an antidiabatic drug.
359. Name the catalyst used in the conversion of milk into curd?
1. Pepsin
2. Invertase
3. Lactase
4. Diastase
Option “3” is correct Milk is converted into curd or yogurt by the process of fermentation. Milk consists of globular proteins called casein. The curd forms because of the chemical reaction between the lactic acid bacteria and casein. Thus, lactase is the catalyst used in conversion of milk into curd.
360. _______ fiber is used in making bristles for brushes.
1. Kevlar
2. Nylon-66
3. Terylene
4. Lexan
Option “2” is correct Nylon 66 is a type of polyamide or Nylon. It is used in plastic Industries in making bristles for brushes.
Q. 1. Ribosomes are made up of..
1. Protein and RNA
2. Protein and DNA
3. Carbohydrates
4. Cellulose
Q. 2. Electron transport chain occur at …
1. Protein fibre
2. Cellulose
3. mitochondrial inner membrane
4. Callose
banothshailu@123gemil.come
Which instrument is used to capture the purity of milk?
(A) hydrometer
(B). Isometric
(C). Lacto meter
Lactometer
I Love chemical…it’s my favourite subject..mere iss mein se hmesha hi boht ache marks aate hai….and my interest is also in chemistry…
Protein and RNA
Protein and RNA
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