Question

hey friends hope u all will help!!

CHOOSE THE CORRECT ONE:-
1) Nitrosomonas helps in the process of:
(a) denitrification
(b) nitrogen assimilation
(c) nitrification
(d) ammonification

2) which of the following is a disadvantage of pesticides?
(a) wheat
(b) paddy
(c)sugarcane
(d) pea

3) _________resembles silk.
(a) nylon
(b) rayon
(c) polyester
(d) acrylic fibre

4) __________is used to disinfect water as it kills germs.
(a) iodine
(b) tincture
(c) chlorine
(d) sulphur

5) Which of these gases is not a part of automobile exhaust?
(a) carbon dioxide
(b) carbon monoxide
(c) sulphur oxides
(d) oxygen

6) Which of these is an example of renewable sources of energy?
(a) coal
(b) petrol
(c) diesel
(d) hydrogen

7) Which of these can solve the energy need in rural areas?
(a) wind energy
(b) methane gas
(c) hydrogen gas
(d) kerosene

8) The aircraft fuel contains which of these?
(a) petrol
(b) diesel
(c) high density petrol
(d) kerosene

FILL IN THE BLANKS:-
1) ___________ is the method of sowing seeds manually.
2) compost lacks in__________,_________and_________.
3) __________irrigation is used in the areas Where water is scarce.
4) the rearing of honey bees is called_________.
5) Most of the metals have_________melting points.
6) Magnesium liberates _________ gas on reacting with boiling water.
7) an example of metal which can be cut with a knife is___________.
8) The white powder formed when magnesium ribbon burns in oxygen is __________
9) Ordinary aluminium strips are not attacked by water because of the presence of a layer of _______ on the surface of the metal.
10) The process of depositing a layer of zinc on iron articles is called_________.

CHOOSE THE ODD ONE OUT AND GIVE REASON OF YOUR CHOICE:-
1) Millets, Groundnut, Barley
2) Chlorine, Hydrogen, Graphite, Sulphur
3) Cotton, Jute, Nylon, Linen
4) Bakelite, Melamine, Formica, PVC

STATE WHETHER THE FOLLOWING STATEMENTS TRUE OR FALSE:-
1) In linear polymerisation, monomers are joined linearly.
2) Rayon is used to make parachutes because of its strength.
3) Polywool is a blend polyester and wool.
4) Spandex is comfortable to wear in summers.
5) Synthetic fibres do not catch fire easily.
6) Thermoplastics can be remoulded into any shape.
7) PET is a thermosetting plastic.

GIVE ONE WORD FOR THE FOLLOWING:-
1) Used to make carpets after blending with wool.
2) Used to make swimwear, ropes.
3) Used to make linings of boots and gloves.
4) Used to make covers for electrical switches.
5) Used to make bottles.
6) Used to make swimming caps.
7) Blended fibre.
8) Elastic fibre.

MATCH THE FOLLOWING:-
(a) Manure polyamide
(b) Shiny surface biodegradable
(c) Sodium benzoate metallic lustre
(d) Nylon food preservative

SEE THE RELATIONSHIP AND COMPLETE THE FOLLOWING:-
1) Malaria: protozoa: : Hepatitis-B : ________
2) Liquid metal: mercury: : Liquid non-metal :___________


ANSWER THESE QUESTIONS ND I WILL MARK THE BEST ANSWER AS THE BRAINIEST ANSWER...........
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Answer 1

Answer:

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Answer 2

Answer:

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Explanation: