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Tushar
Subject: Science
, asked on 1/3/18
Kindly answer the questions in the given activity
Answer
1
Tushar
Subject: Science
, asked on 1/3/18
What are the answers for the given questions in the box which is a ncrt activity ??
Answer
2
Ms Eccentric
Subject: Science
, asked on 1/3/18
Arth :
Answer
1
Payal Arora
Subject: Science
, asked on 1/3/18
In the laboratory, during preparation of hydrogen gas, mention the changes that would occur
Answer
5
Harsh
Subject: Science
, asked on 28/2/18
Answer the given question with proper steps.
Q. In the formation of compound between two atoms A and B, A loses two electrons and B gains one electron.
(a) What is the nature of bond formed between A and B?
(b) Write down the formula of compound formed by the combination of A and B.
(c) Write any three properties of the compound formed.
Answer
2
Heymangini Kumari Dash
Subject: Science
, asked on 27/2/18
What is thermite reaction ?
Answer
2
Heymangini Kumari Dash
Subject: Science
, asked on 27/2/18
show the reduction of all the metals in reactivity series from their ores ..
Answer
3
Sanchit Mehta
Subject: Science
, asked on 27/2/18
Pls give all the equations imp related to fe2o3 and fe3o4 from all the chapters in science.... wheter it is a reactant or a product.. doesnt matter... fastt
Answer
2
Raghav Singh
Subject: Science
, asked on 24/2/18
What is meant by a pressure of gas in an equilibrium?
Answer
1
Raghav Singh
Subject: Science
, asked on 24/2/18
Helium has high henry's constant what does this mean?
Answer
1
R J
Subject: Science
, asked on 23/2/18
Q.20. (i) Explain the term : 'Heating effect of electric current'.
(ii) Derive an expression for the heat produced by electric current and state Joule' s Law.
(iii) Explain why an inert gas like argon is filled in bulbs.
Answer
1
Shriyanshu Padhi
Subject: Science
, asked on 23/2/18
Answer Question number 9 .
Q.9. Give reasons for the following:
i. Silicon counts among metalloids.
ii. Carbon is not used for making aluminium from aluminium oxide.
iii. Metal conduct electricity.
Answer
1
Pratham
Subject: Science
, asked on 22/2/18
What are the valencies of silver ? How are they specific with different compounds
Answer
1
Jaya Lakshmi
Subject: Science
, asked on 22/2/18
How can trace the impurities of magnesium, mercury and calcium be removed from a block of copper metal? No links please
Answer
1
Champ Jee
Subject: Science
, asked on 21/2/18
Why hydrogen being a non-metal has been placed in reactivity series?
Answer
1
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What are you looking for?
Q. In the formation of compound between two atoms A and B, A loses two electrons and B gains one electron.
(a) What is the nature of bond formed between A and B?
(b) Write down the formula of compound formed by the combination of A and B.
(c) Write any three properties of the compound formed.
(ii) Derive an expression for the heat produced by electric current and state Joule' s Law.
(iii) Explain why an inert gas like argon is filled in bulbs.
Q.9. Give reasons for the following:
i. Silicon counts among metalloids.
ii. Carbon is not used for making aluminium from aluminium oxide.
iii. Metal conduct electricity.