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ICSE should update the syllabus 
the bohr atomic model is completely wrong
asked by Catlover (catlover) 7 years ago
0

+ 1 more questions by catlover  

Tip :- For reactions go to the summary of each chapter at the end of the book (thank me later)(for Dalal users only)
asked by Officer Tenpenny (anurag45) 7 years ago
2
Define hydration and hydrogenation?
asked by Biswanath Chinara (ankikutu) 7 years ago
1
chemical test to differentiate between  :
 liquor ammonia and liquid ammonia.
asked by Anushree Pandit (anushree_pandit) 7 years ago
2
no. of carbon-carbon bonds in one molecule of ethene/ethene - is the double/triple covalent bond considered ONE covalent bond?
asked by 10G (2016_10g) 7 years ago
2
find the relative molecular mass of a gas ,0.546g of which ocuupies 360cm3 at 87`C and 380 mm Hg pressure.[1 litre of hydrogen at stp weighs 0.09g]
show working(is it in portion?
asked by Mohammed Malik Sharaf (mmks1234) 7 years ago
2

+ 1 more questions by mmks1234  

Plz explain sterio isomerism with an example
asked by Utkarsh Sharma (utkarsh3107) 7 years ago
2
I have some doubts:
1)State the group number of the group number of  the group which has 3 columns of elements.
2)Name an acid solid in nature.
3)Is Iron(II) Sulphate soluble in water?
4)What is the molecular formula of sodium zeolite?Is it soluble in water?
5)Is the colour of Iron (III) Chloride reddish-brown or yellow?
6)Viraf J Dalal workbook Pg 42 3.(6) Solid sodium chloride contains ions ryt(they havent mentioned free anywhere)
7)Name a nonmetal which volatizes at low temperatures and burns with a pale blue flame.(Is this hydrogen?)
8)Starting from aluminium how would u prepare a dil. acid which gives a white ppt with barium sulphate the precipitate being insoluble in all dil. acids?(Isnt BaSO4 already a ppt?)
9)Which gas turns alkaline pyrogallol soln brown?Cud u give a rxn if possible?
10)Zinc is used in voltaic cells as  cathode.In voltaic cells cathode means +ve  terminal right?
11)Which alloy of copper is used in hardware and scientific instruments?
12)Which alloy of aluminium is used to make the beams of a balance?
13)Why is amalgamated sodium preferred to  normal sodium for preparation of hydrogen?
14)Why is zinc added to copper in the right proportion for manufacture of screws?
15)Electric wires of nichrome are preferred to copper wires for specific applications.Give Reason.
Cud someone pls answer these questions?
asked by Akash Ashok (akashskyash007) 7 years ago
2
name the gas that is most en among  all the elements
asked by Hema Bonaboyina (hemab) 7 years ago
2
Plzz answer them
1)State the reaction when a candle in burnt in a jar full of chlorine
2)State the obsveration when a defragating spoon with burning turpentine is lowered                           into a jar of chlorine.
3)Give reason why sulphur dioxide and not chlorine must be used for bleaching silk
$)Name a colourless gas(other than oxygen) which rekindles a glowing splinter.
asked by Prathamesh Dhake (oisix) 7 years ago

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