Question

Answer the attachment.!

Need quality!✔

Don't spam!​

Answer 1

questions:

a. Plants synthesize glucose in sunlight with the help of chlorophyll from carbon dioxide and water and give away oxygen, Identify the four compounds in this process and name their types.

b. In one sample of brass, the following ingredients were found : copper (70%) and zinc (30%). Identify the solvent, solute and solution from these.

c. Sea water tastes salty due to the dissolved salt. The salinity (the proportion of salts in water) of some water bodies Lonar lake - 7.9 %, Pacific Ocean 3.5 % Mediterranean sea 3.8 %, Dead sea - 33.7 %. Explain two characteristics of mixtures from the above information.

answers:

a) photosynthesis is process in which green parts of plants use carbon dioxide in the presence of sunlight (as well as other sources of light) along with water to make glucose, starch and other food materials.which is absorbed by chlorophyll.

$\sf6CO_2+6H_2O \longrightarrow C_6H_12O_6+6O_2$

$\red{ \sf \: four \: substances \: in \: this \: process: }$

$\sf1)carbon \: dioxide = organic \: compound$

$\sf2)water = organic \: compound$

$\sf3)glucose = organic \: compound$

$\sf4)chlorophyll = complex \: compound$

b)

$\sf solution = copper+zinc=brass$

$\sf solvent = copper(as \: it \: is \: most \: of \: the \: solution)$

$\sf solute = zinc(as \: it \: is \: 30\%)$

c): characteristics of mixtures according to the above information:

1) component part of a mixture are made up of two elements or compounds.

2)the proportion of component part in a mixture can be different colours to form.

3)the properties of component part are continued to have in a mixture.

4) When two substances are mixed together ,they do not react sometimes , and also the mixture formed is impure.

5) The amount of salt can be changed in different mixture, but the properties remain same, i.e. the sea water is salty.

Answer 2

Questions

Answer the following question.

(i) Plants synthesize glucose in sunlight with the help of chlorophyll from carbon dioxide and water and give away oxygen. Identify the four compound in this process and name their types.

(ii) In one sample of brass, the following ingredients were found: copper (70%) and zinc (30%). Identify the solvent, solute and solution from these.

(iii) Sea water tastes salty due to the dissolved salt. The salinity (the proportion of salts in water) of some water bodies Lonar lake - 7.9%, Pacific Ocean 3.5%, Mediterranean sea - 3.8%, Dead sea - 33.7%. Explain two characteristics of mixtures from the above information.

___________________________________________

Answers

(i) Photosynthesis is known as a chemical process in which plants, algae and some bacteria produce oxygen and glucose with the help of carbon dioxide, sunlight and water.

Four compounds that are produced in this process are ⇒

• Carbon Dioxide ⇒ It is an inorganic compound.
• Water ⇒ It is an inorganic compound.
• Glucose ⇒ It is an organic compound.
• Chlorophyll ⇒ It is a organo-metallic compound.

___________________________________________

(ii)  Here brass is the solution since copper and zinc is found in it. Copper is the solvent since it is present in a larger amount whereas zinc is the solute since it is present in lesser amount than the solvent.

___________________________________________

(iii) The characteristics of the mixtures from the above information are listed below.

• The proportion of constituent substances in the mixture may vary.
• The properties of constituent substances in the mixture are retained.

___________________________________________