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Harini
Subject: Science
, asked on 27/2/18
why does the addition of salt having common ion to a weak acid change the ph of a solution
Answer
1
Shreya Watwe
Subject: Science
, asked on 26/2/18
ph of humus
Answer
3
Son Ser
Subject: Science
, asked on 25/2/18
Is carbonmonoxide acidic in nature (. Yes or no). Give reason . Plzz fast i have exams tomorrow . Dont provide any link plzzz
Answer
3
Payal Arora
Subject: Science
, asked on 23/2/18
What precautions will you take while doing the reaction of dil. HCl and NaOH with zinc metal ?
Answer
2
Romil Singh
Subject: Science
, asked on 23/2/18
Solve this:
Q. (a) Name one salt each of the following type
(i) Which gives acidic solution in water
(ii) Which gives alkaline solution in water
(iii) Which gives neutral solution in water
Answer
2
R J
Subject: Science
, asked on 23/2/18
13. If the image formed by a mirror for all positions of the object placed in front of it is always erect and diminished, what type of mirror is it ? Draw a ray diagram to justify your answer. Where and why do we generally use this type of mirror?
14. Explain ocean-thermal energy and how can it be harnessed. Mention any two limitations in obtaining the energy from the oceans?
OR
Traffic jams, outside the school gate was a common sight since most of the students came on their own cars. This became a topic for discussion on every P.T.A meeting. On one such P.T.A. meeting, principal pointed out the examples of four of their teachers who were car pooling for the past several years. She asked the parents also to adopt this method to sort out the problem.
Answer
1
Areeb Fatima
Subject: Science
, asked on 22/2/18
Why does overeating cause acidity
Answer
3
Choosy Nanda Rocks
Subject: Science
, asked on 21/2/18
what happens if you drink hydrogen peroxide?
Answer
1
Payal Arora
Subject: Science
, asked on 21/2/18
What should be the pH value of aqueous solution of baking soda ?
Answer
2
Pratham
Subject: Science
, asked on 21/2/18
What actually happens when universal indicator is added to acid or base..what makes them change color?
Answer
4
Akshay Mediratta
Subject: Science
, asked on 20/2/18
what is the colour of litmus solution when it is neither acidic or basic
Answer
2
Gitesh
Subject: Science
, asked on 19/2/18
what forms when chlorine gas is passed over slaked lime?????
Answer
8
Romil Singh
Subject: Science
, asked on 19/2/18
Solve this:
Q.22. Amongst
F
e
O
H
3
,
P
b
O
H
2
, NaOH and KOH which are bases and which are alkalis and why?
Answer
3
Jeevaj
Subject: Science
, asked on 17/2/18
How does oily food lead to acidity?
Answer
2
Jeevaj
Subject: Science
, asked on 17/2/18
Why doesn't pickled and jammed food spoil?
Answer
1
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ph of humus
Q. (a) Name one salt each of the following type
(i) Which gives acidic solution in water
(ii) Which gives alkaline solution in water
(iii) Which gives neutral solution in water
14. Explain ocean-thermal energy and how can it be harnessed. Mention any two limitations in obtaining the energy from the oceans?
OR
Traffic jams, outside the school gate was a common sight since most of the students came on their own cars. This became a topic for discussion on every P.T.A meeting. On one such P.T.A. meeting, principal pointed out the examples of four of their teachers who were car pooling for the past several years. She asked the parents also to adopt this method to sort out the problem.
Q.22. Amongst , NaOH and KOH which are bases and which are alkalis and why?