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Why are acids not stored in metal containers? Containers/vessels made from which materials are safe to store acids?
do bases conduct electricity
turmeric stains on white clothes ,when washed with soap turn red.why?
GIVE TWO EXAMPLES EACH OF AN INSOLUBLE BASE AND A SOLUBLEBASE?
is sugar solution acidic or basic in nature
why are toothpastes basic in nature???
Factory waste is neutralised before depositing it into the water bodies.give reasons
why quick lime and slaked lime is added to soil
Is alcohol acidic or basic?
Is soda water acidic or basic?
IS ENO IS BASE OR ACID???
name acid or bases found in the following -:
1. vinegar 2. ant's sting 3. lemon 4. curd 5. spinach 6. amla 7. tamarind 8. lime stone 9. window cleaner 10. soap 11. milk of magnesia
what is the colour change found in china rose in base and acid
please give me answers of table 5.3.&5.4.it is my home work that mam give me.fast????plz plz plz!!!!
Which is the base found in bittergourd?
explain the following :-
a. calamine lotion is applied on bee stings
b. base is added to factory waste before it is discharged into river
HCOOK is basic,nutral,or acidic salts
is lime water a base or acid? if it is a base then how can it be be base becuse lime is acidic in nature?
Q.3 Name one each of acidic, basic and neutral substances.
what are concentrated and dilute acids?
some examples of concentrated and dilute acids-
how to dilute an acid?
What is the pH value of milk of magnesia?
Give some examples each of acidic,basic and neutral salt .
why farmers add slaked lime to acidic soil ?
an antacid tablet is taken when you suffer from acidity.give reason?
What happens when we add dilute sulphuric acid to lime water? Does the reaction mixture become hot or cool?
names of 5 different types of salts? with their formula,common amd chemical name and 2 uses each.
Is Beetroot acidic in nature or basic in nature?
is weak acid and dilute acid the same.why
please give me also answers of table 5.5 and 5.1, 5.5 plz question is in the book plz plz fast fast???!!!
can u name 10 acids,bases and salts
i m confused
Some acids are dangerous , other are not .Explain,giving example.
how is litmus paper formed
WHAT IS THE CHEMICAL FORMULA OF QUICK LIME AND SLAKED LIME AND CHOLIRINE?
{I WANT ANSWER FAST MY SCIENCE TOLD ME TO FIND THE ANSWER PLEASE HELP ME MERIT NATION EXPERT AND THE PEOPLE WHO ARE STUDYING WITH ME }
what are alkalis?give one example.
what is the difference between acids bases and salts
chemical formla of lactic acid, citric acid, malic acid, tartaric acid, oxalic acid, formic acid, acetic acid, tannic acid, folic acid
Explain the use of china rose petals as indicators.
Name of 10 neutralization reaction in our day-to-day life(not the ones in the chapter)...
is oxygen acidic or basic?
which acid is found in the curd?
Why sulphuric acid is known as the king of chemicals
What is an antacid ? Give 2 examples .
Raw mango is sour in taste becoz it contains acid but when it become fully matured (ripe)it tastes sweet. Why is that ? Where does the acid go ??
which acid or base is present in onion?
What happens when acids react with metal and metal carbonates
(ii) Acidic soil is treated with a base and basic soil is treated with organic matter
examples of synthetic indicators
What is the original colour of phenolphthalein?
Iers there any trick to remember acids changes blue litmus paper to red and red litmus paper to blue??
1) Turmeric indicator does not indicate weather the substance is acidic or neutral. Is the statement true? explain.
2) If you get turmeric stains on your clothes while eating food, try to wash it off with soap, the stain becomes red. Why ? Find out how to remove haldi stains from clothes.
i need answers urgently, please do answer these questions, thank you.
are bases corrosive in nature?
What causes acidity in stomach? Why does a doctor recommend an antacid to a person
suffering from acidity.
Ammonia is used in many household products like window cleaners. It turns red
litmus to blue. What is the nature of ammonia?
how can hydrated salt be converted to anhydrous salt
What happens when Zinc granules are added to Dilute hydrochloric acid (write a blanced chemical equation)
some acids,bases and salts are commonly used in our daily life .Find out the name of such substance , specify whether they are acid, bases or salts and write their uses?
Farmers sometimes sprinkle white lime powder in thier fields.How does this help them?
what is criss cross method of writing formula
what are acids,bases and salts?? definition plz!!
when turmeric poder reacts with soap it turns red not other colors why?
why the blue litmus paper turn purple when kept in neutral substance ?why not remain in same colour ?
The wastes of many factories contain acids.Why is it considered necessary to neutralize them before allowing the wastes to flow into water bodies?
why are gold and silver called noble metals?
when drops of lemon juice are put on blue litmus it turns red what will happen if we put some drops of soap solutionon the same position on litmus paper
a milkman adds a very small amount of baking soda to fresh milk. Why?
what is the difference between lime water and lime juice
also please tell which is acidic and which is basic
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Syllabus
Why are acids not stored in metal containers? Containers/vessels made from which materials are safe to store acids?
do bases conduct electricity
turmeric stains on white clothes ,when washed with soap turn red.why?
GIVE TWO EXAMPLES EACH OF AN INSOLUBLE BASE AND A SOLUBLEBASE?
is sugar solution acidic or basic in nature
why are toothpastes basic in nature???
Factory waste is neutralised before depositing it into the water bodies.give reasons
why quick lime and slaked lime is added to soil
Is alcohol acidic or basic?
Is soda water acidic or basic?
IS ENO IS BASE OR ACID???
name acid or bases found in the following -:
1. vinegar 2. ant's sting 3. lemon 4. curd 5. spinach 6. amla 7. tamarind 8. lime stone 9. window cleaner 10. soap 11. milk of magnesia
what is the colour change found in china rose in base and acid
please give me answers of table 5.3.&5.4.it is my home work that mam give me.fast????plz plz plz!!!!
Which is the base found in bittergourd?
explain the following :-
a. calamine lotion is applied on bee stings
b. base is added to factory waste before it is discharged into river
HCOOK is basic,nutral,or acidic salts
is lime water a base or acid? if it is a base then how can it be be base becuse lime is acidic in nature?
Q.3 Name one each of acidic, basic and neutral substances.
Q.4 What are the general properties of an acid and a base?Q.5 What is an indicator? Give examples of two natural indicators?Q.6 What is an acid rain? How is it formed? Mention three bad effects of acid rain.Q.7 Name four substances that can serve as indicators.Q.8 Turmeric indicator does not indicate whether the substance is acidic or neutral. Is thestatement true? Explain.Q.9 What is the color of litmus paper which changes its color in acidic solution?Q.10 If few drops of purple-cabbage juice are added to the colorless solution of an acidicmaterial. What would be the color of the resulting solution?Q.11 A few drops of china rose indicator are added to the colorless solution of a chemicalthe resulting solution will become light green. What does it indicate about the natureof the chemical? Q.12 What is a neutralization reaction? Does a neutralization reaction always result in theformation of neutral salt?Q.13 Write a note on uses of bases.Q.14 You are given three unknown liquids an acid other is a base and third is a neutralsubstance. How will you classify the given liquids as acidic, basic and neutral?Q.15 An acidic material is mixed with an equivalent amount of a basic material.(i) What is the reaction called?(ii) What products are formed?Q.16 Explain why(i) Great care should be taken while handling Laboratory acids and bases.(ii) Acidic soil is treated with a base and basic soil is treated with organic matter.Q.17 How is a salt formed?Q.18 What happens when metals and non-metals combine with Oxygen?Q.19 Nancy a class-VII student was performing an experiment in the Chemistry lab. Herteacher instructed her1) Not to waste/smell chemicals2) Not to dispose off all chemicals in the sink.3) Not to mix chemicals haphazardly for example, never add water to acid todilute it; always add acid slowly to water.Why did the teacher advice Nancy to follow the above safety measures?HOTS QUESTIONSQ.1 If you get Turmeric stain on your clothes while eating food, and try to wash it off withsoap, the stain becomes red. Why? Find out how to remove haldi stains from clothes.Q.2 Is the meaning of weak acid the same as that of dilute acid?Q.3 The waste of many factories contain acids. Why is it considered necessary toneutralize them before allowing the waste to flow into water bodies.?what are concentrated and dilute acids?
some examples of concentrated and dilute acids-
how to dilute an acid?
What is the pH value of milk of magnesia?
Give some examples each of acidic,basic and neutral salt .
why farmers add slaked lime to acidic soil ?
an antacid tablet is taken when you suffer from acidity.give reason?
What happens when we add dilute sulphuric acid to lime water? Does the reaction mixture become hot or cool?
names of 5 different types of salts? with their formula,common amd chemical name and 2 uses each.
Is Beetroot acidic in nature or basic in nature?
is weak acid and dilute acid the same.why
please give me also answers of table 5.5 and 5.1, 5.5 plz question is in the book plz plz fast fast???!!!
can u name 10 acids,bases and salts
i m confused
Some acids are dangerous , other are not .Explain,giving example.
how is litmus paper formed
1. sodium chloride a. neutral media
2.water b. formic acid
3.lime juice c. lichen
4. lime water d. magnesium hydroxide
5. methyl orange e. salt
6. litmus f. acid
7. sting of bees g. indicator
8. to remove acidity h. base
WHAT IS THE CHEMICAL FORMULA OF QUICK LIME AND SLAKED LIME AND CHOLIRINE?
{I WANT ANSWER FAST MY SCIENCE TOLD ME TO FIND THE ANSWER PLEASE HELP ME MERIT NATION EXPERT AND THE PEOPLE WHO ARE STUDYING WITH ME }
what are alkalis?give one example.
Common salt
Sodium bicarbonate
Washing soda
Potassium nitrate
what is the difference between acids bases and salts
chemical formla of lactic acid, citric acid, malic acid, tartaric acid, oxalic acid, formic acid, acetic acid, tannic acid, folic acid
Explain the use of china rose petals as indicators.
Name of 10 neutralization reaction in our day-to-day life(not the ones in the chapter)...
is oxygen acidic or basic?
which acid is found in the curd?
Why sulphuric acid is known as the king of chemicals
What is an antacid ? Give 2 examples .
Raw mango is sour in taste becoz it contains acid but when it become fully matured (ripe)it tastes sweet. Why is that ? Where does the acid go ??
which acid or base is present in onion?
What happens when acids react with metal and metal carbonates
(ii) Acidic soil is treated with a base and basic soil is treated with organic matter
examples of synthetic indicators
What is the original colour of phenolphthalein?
Iers there any trick to remember acids changes blue litmus paper to red and red litmus paper to blue??
1) Turmeric indicator does not indicate weather the substance is acidic or neutral. Is the statement true? explain.
2) If you get turmeric stains on your clothes while eating food, try to wash it off with soap, the stain becomes red. Why ? Find out how to remove haldi stains from clothes.
i need answers urgently, please do answer these questions, thank you.
are bases corrosive in nature?
What causes acidity in stomach? Why does a doctor recommend an antacid to a person
suffering from acidity.
Ammonia is used in many household products like window cleaners. It turns red
litmus to blue. What is the nature of ammonia?
how can hydrated salt be converted to anhydrous salt
What happens when Zinc granules are added to Dilute hydrochloric acid (write a blanced chemical equation)
some acids,bases and salts are commonly used in our daily life .Find out the name of such substance , specify whether they are acid, bases or salts and write their uses?
a. it turns pink
b. it turns red
c. it remains colourless
d.it turns blue
MULTIPLE CHOICE QUESTIONS
Farmers sometimes sprinkle white lime powder in thier fields.How does this help them?
what is criss cross method of writing formula
what are acids,bases and salts?? definition plz!!
when turmeric poder reacts with soap it turns red not other colors why?
why the blue litmus paper turn purple when kept in neutral substance ?why not remain in same colour ?
The wastes of many factories contain acids.Why is it considered necessary to neutralize them before allowing the wastes to flow into water bodies?
Please experts I need the answer by today tomorrow is my exam urgent reply
Thanks
why are gold and silver called noble metals?
when drops of lemon juice are put on blue litmus it turns red what will happen if we put some drops of soap solutionon the same position on litmus paper
a milkman adds a very small amount of baking soda to fresh milk. Why?
what is the difference between lime water and lime juice
also please tell which is acidic and which is basic