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Posted by S V Vishnu Dev 4 years, 4 months ago

CBSE > Class 10 > Science

2 answers

Aditya Khohwal 4 years, 4 months ago

Un countable

0Thank You

Jasleen Gill 4 years, 4 months ago

The answers of these questions are written in the ncert book of science class 10 or if you have Prachi book or self study or any other refernce book you can refer from there.. :)

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ANSWER

Sia ? 4 years, 4 months ago

Produces identical quality as the parent. Plants that do not have viable seed, can be reproduced. Flowers produced are of superior quality. Desirable character of fruit can be maintained.

Sehaj Kaur 4 years, 4 months ago

LIVER 1. Secretes Bile 2. Bile contains sodium bicarbonate (NaHCO3) which removes acidity 3. Bile emulsifies fats (break down of fat molecules into a soluble substance) STOMACH 1. Contains gastric juice 2. Gastric juice contains • hydrochloric acid- activates and converts pepsinogen into pepsin and trypsinogen into trypsin • pepsinogen- converts protein into peptide • trypsinogen- converts milk protein into peptide • mucus- protects stomach wall from HCL nd prevents the formation of ulcers PANCREAS 1. Secretes pancreatic juice 2. It contains enzymes like • pancreatic amylase- converts starch into glucose • lipase- converts emulsified fats into fatty acid and glycerol • trypsin- converts protein intopeptide and amino acids SMALL INTESTINE 1. Secretes intestinal juice 2. It contains enzymes which • converts complex carbohydrates into glucose • protein into amino acids • fats into fatty acid and glycerol

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Vishvesh Mishra 4 years, 4 months ago

A reducing agent is that substance in redox reaction that takes oxygen from the other molecule to get oxidized . Fe2O3 + Al = Fe + Al2O3 Here aluminum or Al takes oxygen from Fe2O3 to make itself oxidized.

Rohit Kirtania 4 years, 4 months ago

(i) Electrolytic decomposition reactions. (ii) Combination reactions. (iii) Displacement reactions. (iv) Thermal decomposition reactions. (v) Double displacement reactions.

Adithya Dev A 4 years, 4 months ago

Digests the proteins present in the food into peptones (by secreting the protein digesting enzyme, pepsin) and churns the food for 3 - 4 hours converting the food into a form which facilitates easy movement through the intestine.

Yes, combination reaction can be a redox reaction. Redox reactions involve simultaneous occurrence of oxidation and reduction reactions. Oxidation reactions simply means loss of electrons and reduction reactions, gain of electrons. Now, take the example of a combination reaction say, 2 H2 + O2 = 2 H2O. Here, H2 electrons are gained and O2 electrons are lost to form a WATER molecule.

The digestion in the alimentary canal starts from the mouth itself. The enzyme Salivary amylase present in the mouth helps in partial digestion of starch. About 30% of the starch is digested in the mouth. The enzyme, salivary amylase breaks down the starch into Maltose, Iso-maltose and Alpha dextrin.
Functions of saliva;
1. It helps in softning the food.
2. It helps in making the food wet.
3. It helps in partial digestion of starch.

Chakradhar Yerrabolu 4 years, 4 months ago

The process of moving of the particles from higher concentration to the lower concentration is called as diffusion. Eg : Take some sugar and pour it in water . The sugar moves from high concentration to low concentration . ➡️ It is the reverse process of osmosis. ➡️ It can also occur in all the mediums ( solid , liquid , air )

Anisha Kumar 4 years, 4 months ago

The process through which human being utilises food to get energy is called respiration. It is a oxidation reaction where carbohydrate is oxidised to produce energy

Satyam Kumar 4 years, 4 months ago

You missed something if ammeter is connected parallel then it will definitely burn or break the circuit and if voltmeter is connected in series it will show wrong reading cuz resistance of the circuit will be increased.

Ammeter has very low resistance so, it is always connected in series across the terminals of a cell. Whereas, voltmeter, being a higher resistance device, is always connected in parallels across the ends between which potential difference has to be measured.

REFLECTION = phenomenon of bouncing back of light to the same medium after striking a surface. Occurs in mirrors. REFRACTION = phenomenon of bending of light rays on moving obliquely from one medium to another of different optical densities. Occurs in lenses.

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