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1 : Which liquid among the following is a colloidal solution:

1 : Milk

2 : Slaked lime used for white wash

3 : Vinegar solution

4 : Mixture of AgCl in water

2 : The crystals of which substance has rhombic shape:

1 : Brass

2 : Sulphur

3 : Graphite

4 : Bronze

3 : The man-made polymer is:

1 : Starch

2 : Polystyrene

3 : Protein

4 : Cellulose

4 : Hazardous effects of shopping bags are studied in:

1 : Geochemistry

2 : Inorganic chemistry

3 : Analytical chemistry

4 : Environmental chemistry

5 : Which of the following is a heterogeneous mixture?

1 : A solution of calcium hydroxide in water

2 : Solution of potassium nitrate in water

3 : Hot chocolate

4 : Concrete mixture

6 : A solution of KClO₃ has a solubility of 13.2g per 100 cm³ at 40°C. How will its solubility be affected if temperature decreases?

1 : The solubility will increase

2 : The solubility will decrease

3 : The solubility will remain the same

4 : The solubility will first increase and then decrease

7 : When the tiny visible particles of a substance are dispersed through a medium, the mixture is named as:

1 : True solution

2 : Colloid

3 : Suspension

4 : Saturated solution

8 : Studying the rate of starch hydrolysis under different temperatures falls under which branch of chemistry?

1 : Organic chemistry

2 : Analytical chemistry

3 : Biochemistry

4 : Physical chemistry

9 : A state of matter whose properties are between those of liquids and crystalline solids:

1 : Liquid crystal

2 : Super critical fluid

3 : Plasma

4 : Dark matter

10 : Matter is present in neon sign in the state of:

1 : Super critical fluid

2 : Plasma

3 : Gas

4 : Liquid crystal

11 : What is the main focus of organic chemistry?

1 : Study of metal

2 : Study of water

3 : Study of carbon- containing

4 : Study of environment

12 : Which of the following is the branch of chemistry that focuses on the identification and analysis subtract?

1 : Organic chemistry

2 : Analytical chemistry

3 : Inorganic chemistry

4 : Physical chemistry

13 : What does inorganic chemistry primarfocus only?

1 : Organic compounds

2 : Non- carbon compounds

3 : Biological molecules

4 : Biochemistry

14 : Which branch of chemistry is the branch of chemistry and focuses on the identification and analysis of substances Organ chemistry?

1 : Thermochemistry

2 : Biochemistry

3 : Physical chemistry

4 : Analytical chemistry

15 : Which branch of the chemistry studies the chemical processes that occur within living organism?

1 : Biochemistry

2 : Organic chemistry

3 : Analytical chemistry

4 : Environmental chemistry

16 : What does environmental chemistry primarily focus on?

1 : The chemistry of water

2 : The study of chemicals in the environment and their effects?

3 : The chemistry of human cells

4 : The study of labor technique

17 : Which of the following is a property of solid?

1 : Define Shape and volume

2 : No define shape, but define volume

3 : No define shape and volume

4 : Define shape, and volume

18 : Which of the following is a branch of chemistry that deals with the study of subtract and the changes they undergo?

1 : Biology

2 : Chemistry

3 : Astrology

4 : Physics

19 : The branch of chemistry that studies the composition, structure, properties, and reactions of elements and compounds is called:

1 : Analytical chemistry

2 : Inorganic chemistry

3 : Organic chemistry

4 : Environmental chemistry

20 : Which branch of chemistry deals with the study of the properties and behavior of matter?

1 : Analytical chemistry

2 : Biochemistry

3 : Organic chemistry

4 : Physical chemistry

21 : What is the main characteristics of gases?

1 : No define shape or volume

2 : No define shape, but define volume

3 : No define shape or volume

4 : Define shape, but no define volume

22 : Which of the following states of matter has a define volume But no define matter

1 : Solid

2 : Liquid

3 : Gas

4 : Plasma

23 : Which branch of chemistry focuses on the study of the chemical in living organisms and the role enzymes?

1 : Analytical chemistry

2 : Biochemistry

3 : States of Matter

4 : Organic chemistry

24 : Which of the following is a pure substance made up of only type at atom?

1 : Mixture

2 : Element

3 : Compound

4 : Solution

25 : A compound is formed when?

1 : Two or more elements are physically mixed tougher

2 : Two or more elements are chemically combine in fixes proportions

3 : A substances decomposes are mixed into simpler substance

26 : The particles in a gas are:

1 : Closely packed and vibrate in place

2 : Far apart and move freely

27 : Which of the following is a properly of a compound:

1 : A compound can be easily by physical means

2 : A compound has fixed composition

3 : A compound consists of only type of atom

4 : A compounds has no define ratio of elements

28 : Which allotrope of carbon is the hardest naturally occurring substance?

1 : Graphite

2 : Diamond

3 : Fullerene

4 : Coal

29 : Which of the following statements is true about the particles in a solid?

1 : The particles move freely and quickly

2 : The particles are far apart and move randomly

3 : The particles are loosely states of matter has a define volume but no define shape?

4 : The particles are loosely arranged and can flow

30 : What property of graphite makes it suitable for use as a lubricant?

1 : Hardness

2 : High melting

3 : Layers can slide over each other

4 : Electrical conductivity

31 : What happens to the particles in a suspension if left undisturbed for some time?

1 : They dissolve completely

2 : That evenly disturbed

3 : They evaporate

32 : What is solubility?

1 : The process of a solid turning into a gas

2 : The ability of a substances to dissolve in solvent

3 : The rate at which substance evaporates

4 : The ability of a Fas to form a solid

33 : Which of the following is a true about elements:

1 : Elements are always are mixture of difference arums

2 : Elements can be chemically broken down in to compounds

3 : Elements can be chemically broken down in to compounds

4 : Elements are composed of only one type of molecules

34 : What happens to the solubility of most solids in water as the temperature increase?

1 : It increase

2 : It remains constant

3 : Solubility remains unaffected by pressure

4 : Solubility fluctuates with temperature instead

35 : Which of the following is a characteristics of a true solution?

1 : It is always opaque

2 : The particles can be seen with the naked eye

3 : It is a homogeneous mixture

4 : The solute particles settle down on standing

36 : Which of the following represents a chemical bond between two elements?

1 : Water

2 : Saltwater

3 : Air

4 : Soil

37 : Which of the following is an example of a heterogeneous mixture?

1 : Salad

2 : Air

3 : Saltwater

4 : Vinegar

38 : Which of the following is a allotrope of carbon?

1 : Diamond

2 : Sodium chloride

3 : Water

4 : Sulfured dioxide

39 : What is the main difference between the allotropes of an elements?

1 : Graphite

2 : Buckminsterfullence

3 : Charcoal

4 : Oxygen

40 : Which of the following is an example of a compound?

1 : Carbon dioxide

2 : Sand

3 : Air

4 : Fruit Salad

41 : Which factor does NOT affect the solubility of a substance?

1 : Temperature

2 : Pressure

3 : Nature of the solution solvent

4 : Color of the solute

42 : Which of the following best describe. Tyndall effect?

1 : The evaporation of a solvent

2 : The evaporation of light by large particles in a solution

3 : The solubility of a solute in a solute

4 : The separation of a mixture using a filter

43 : A homogeneous mixture has?

1 : Difference components that are easily distinguished shape

2 : Uniform composition throughout

3 : Components that separate easily

4 : Only one type of substance

44 : Which of the following is an example of colloidal solution?

1 : Salt water

2 : Milk

3 : Sand in water

4 : Pure water

45 : Which of the following is true for a colloidal solution?

1 : It is heterogeneous and its particles settle down on standing

2 : It is homogenous and its particles are invisible even a microscope

3 : It is heterogeneous, but its particles do not settle down on standing

46 : Which states of matter both a define shape and a define volume?

1 : Solid

2 : Liquid

3 : Gas

4 : Plasma

47 : Which of the following is an example of a mixture?

1 : Saltwater

2 : Water

3 : Oxygen

4 : Sodium chloride

48 : Which of following can be classified as a mixture?

1 : Air

2 : Water

3 : Sodium

4 : Oxygen

Chemistry 9th MCQs || Ilam Ghar