Extraction of Indicators 1 (Form 1, Chemistry)

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Quiz on plant indicators and extracts.

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Extraction of Indicators 1 (Form 1, Chemistry)


Froggy Jumps Extraction of Indicators 1 (Form 1, Chemistry)Version en ligne Quiz on plant indicators and extracts. par YAKILI LMS 1 What is a natural indicator in chemistry? a A synthetic acid used to sterilize solutions b A substance from plants that changes color with acids or bases c A man-made dye that glows under UV 2 Which plant yields red cabbage indicator? a Red cabbage b Blueberry c Mint leaves 3 What is the main purpose of plant indicators? a To test acidity or basicity of solutions b To color fabrics c To clean metals 4 What is an extract in chemistry? a A type of acid only b A substance taken from plants by a process like soaking or distillation c A pure metal 5 Name a common plant used to make indicator ink. a Spinach b Red cabbage c Carrot juice 6 Which property do indicators show in the presence of acids? a Color change b Gas release c Gel formation 7 Which property do indicators show in the presence of bases? a Solubility increase b Color change c No change at all 8 What is an extract’s function in experiments? a To harden plastics b To introduce plant compounds into solutions c To power engines 9 How is a plant extract often prepared? a Compressing with sugar b Soaking plant material in water or alcohol c Burning at high heat 10 Name a common plant used to prepare an acid-base indicator. a Potato peels b Red cabbage c Barley 11 What color does red cabbage indicator turn in acidic solutions? a Red/pink b Blue c Yellow 12 What color does red cabbage indicator turn in basic solutions? a Red b Purple c Green to yellow 13 What is the term for substances that change color with pH? a Solvents b Catalysts c pH indicators 14 Why are plant indicators safe for students? a They come from everyday plants and are non-toxic b They require electricity to use c They are highly toxic 15 Can you use tea as a pH indicator? a No, never b Only for bases c Yes, it can show color changes 16 What is a natural extract example besides red cabbage? a Petrol b Plastic solvent c Onion juice 17 What equipment is typical for making plant extracts? a Beaker and filter paper b Microscope slides c Hammer and anvil 18 What is the first step in making a plant indicator? a Chop the plant material b Burn it to ash c Freeze it without chopping 19 What solvent is commonly used to extract pigments for indicators? a Water or ethanol b Mercury c Solid wax 20 What is a test solution for indicators? a A solution whose pH is tested b A pure metal sheet c A dry powder 21 Which lab skill helps with plant indicator experiments? a Drilling metal b Measuring liquids accurately c Soldering wires 22 What is an application of plant indicators? a Growing crystals b Bonding wood c Testing acidity of juices 23 Which home item can be used to illustrate pH change with indicators? a Cabbage indicator in vinegar or baking soda b Baking bread c Boiling eggs 24 What makes an indicator useful in chemistry? a Visible color changes show pH b It produces sound c It glows in dark 25 Which part of a plant contains natural pigments? a Roots only b Nothing, it's synthetic c Leaves and stems 26 Which extract type includes essential oils? a Fluids from plants b Inert gases c Solid minerals 27 Which indicator is purple in neutral range? a Yellow in neutral b Blue in neutral c Litmus shows purple near 7 28 What is the main aim of using indicators in experiments? a To tell if a solution is acidic or basic b To measure mass c To heat the solution 29 Which household item is NOT an indicator? a Red cabbage juice b Blueberry juice c Salt 30 What should you observe when testing indicators? a Heat emission b Gas release c Color change 31 Which plant indicator is often used in classrooms? a Garlic b Ginger c Red cabbage 32 What is the result of an indicator in acidic solution? a A color change b No change c Vapor release 33 Which tool helps separate extracts from solids? a Beaker tongs b Filter paper c Ruler 34 What does a basic solution do to universal indicator? a Turn red b Disintegrate c Shift color toward blue/green 35 Which phase describes how indicators work? a Magnetic change b Weight change c Color change with pH 36 What is an example of a plant extract not used as an indicator? a Grape extract for color change b Celery extract for color change c Red onion for color change 37 What safety step is important when making indicators? a Ignore spills b Eat the plant c Wear goggles and gloves 38 Why are plant indicators preferred in schools? a Safe and easy to use with visible results b Toxic and harsh c Expensive and rare 39 Which indicator uses beetroot pigment? a Apple juice b Beetroot extract c Milk 40 What is a key step after extracting indicator? a Test with acidic and basic solutions b Add sugar c Heat to dry 41 Which plant part is often used to prepare indicators? a Bones b Shells c Leaves 42 Which is NOT a type of extract? a Essential oil extract b Digital extract c Aqueous extract 43 Which indicator color indicates near-neutral pH? a Bright orange b Purple or pink for some indicators c Dark brown 44 What should you record after using indicators? a Volume of gas released b Mass of solution c Color changes and approximate pH 45 What is the simplest indicator material for beginners? a Sodium hydroxide b Red cabbage juice c Mercury 46 Which statement is true about extracts? a They are gases b They are metals c They are obtained from plant material 47 Can plant extracts indicate acids only? a No, they can indicate acids and bases b Only bases c Only solvents 48 What is the purpose of filtering after extraction? a To remove solid residues b To evaporate water c To crystallize metal 49 Which color change is typical with acid in cabbage indicator? a Red/pink b Green c Blue 50 What is the term for plant-derived solvents in extracts? a Metal solvents b Natural solvents c Artificial polymers

Extraction of Indicators 1 (Form 1, Chemistry)

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Extraction of Indicators 1 (Form 1, Chemistry)Version en ligne

par YAKILI LMS

What is a natural indicator in chemistry?

Which plant yields red cabbage indicator?

What is the main purpose of plant indicators?

What is an extract in chemistry?

Name a common plant used to make indicator ink.

Which property do indicators show in the presence of acids?

Which property do indicators show in the presence of bases?

What is an extract’s function in experiments?

How is a plant extract often prepared?

Name a common plant used to prepare an acid-base indicator.

What color does red cabbage indicator turn in acidic solutions?

What color does red cabbage indicator turn in basic solutions?

What is the term for substances that change color with pH?

Why are plant indicators safe for students?

Can you use tea as a pH indicator?

What is a natural extract example besides red cabbage?

What equipment is typical for making plant extracts?

What is the first step in making a plant indicator?

What solvent is commonly used to extract pigments for indicators?

What is a test solution for indicators?

Which lab skill helps with plant indicator experiments?

What is an application of plant indicators?

Which home item can be used to illustrate pH change with indicators?

What makes an indicator useful in chemistry?

Which part of a plant contains natural pigments?

Which extract type includes essential oils?

Which indicator is purple in neutral range?

What is the main aim of using indicators in experiments?

Which household item is NOT an indicator?

What should you observe when testing indicators?

Which plant indicator is often used in classrooms?

What is the result of an indicator in acidic solution?

Which tool helps separate extracts from solids?

What does a basic solution do to universal indicator?

Which phase describes how indicators work?

What is an example of a plant extract not used as an indicator?

What safety step is important when making indicators?

Why are plant indicators preferred in schools?

Which indicator uses beetroot pigment?

What is a key step after extracting indicator?

Which plant part is often used to prepare indicators?

Which is NOT a type of extract?

Which indicator color indicates near-neutral pH?

What should you record after using indicators?

What is the simplest indicator material for beginners?

Which statement is true about extracts?

Can plant extracts indicate acids only?

What is the purpose of filtering after extraction?

Which color change is typical with acid in cabbage indicator?

What is the term for plant-derived solvents in extracts?