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Recent questions tagged unit15
Questions
In Castner's process of attraction of sodium cathode is
jeemain
chemistry
unit15
p-block-elements
q100
difficult
asked
Jan 17, 2014
by
sreemathi.v
1
answer
Which of the following reacts with $BCl_3$ to form diborane
jeemain
chemistry
unit15
p-block-elements
sec-a
q99
difficult
asked
Jan 17, 2014
by
sreemathi.v
1
answer
Aqueous solution of carnalite gives positive test for
jeemain
chemistry
unit15
p-block-elements
q97
difficult
asked
Jan 17, 2014
by
sreemathi.v
1
answer
Silica is eliminated during the process as:
jeemain
chemistry
unit15
p-block-elements
q96
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
$\Rightarrow A\overset{HBr}{\rightarrow}C_2H_5Br\overset{B}{\rightarrow}A$.B is
jeemain
chemistry
unit15
p-block-elements
q95
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
$\Rightarrow A\overset{HBr}{\rightarrow}C_2H_5Br\overset{B}{\rightarrow}A$.A is
jeemain
chemistry
unit15
p-block-elements
q94
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
Flurosis disease is caused due to the reaction of __________with excess of fluride in the body
jeemain
chemistry
unit15
p-block-elements
q93
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
In the ground state an element has 13 electrons in M shell.The element is
jeemain
chemistry
unit15
p-block-elements
sec-a
q92
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
The number of lone pairs of e's present in $Xe$ in $XeF_4$
jeemain
chemistry
unit15
p-block-elements
q91
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
Chloroethane reacts with $X$ to form diethyl Either.What is $X$?
jeemain
chemistry
unit15
p-block-elements
q90
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
Which of the following is Lucus reagent?
jeemain
chemistry
unit15
p-block-elements
q89
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
In which of the following $H_2O_2$ acts as reducing agent?
jeemain
chemistry
unit15
p-block-elements
q88
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
Which of the following is used in the preparation of generated water (soda)?
jeemain
chemistry
unit15
p-block-elements
sec-a
q87
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
Which of the following is anhydride of $HNO_3$?
jeemain
chemistry
unit15
p-block-elements
q86
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
Which of the following in oxide mineral
jeemain
chemistry
unit15
p-block-elements
q85
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
Mortar is mixture of
jeemain
chemistry
unit15
p-block-elements
q84
sec-a
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
A gas decolourises $Br_2$ in $CCl_4$ and forms a precipitate with Ammoniacal silver nitrate .The gas is
jeemain
chemistry
unit15
p-block-elements
q83
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
Carbogen is _____________
jeemain
chemistry
unit15
p-block-elements
q82
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
The oxidation number of sulphur in $S_8$
jeemain
chemistry
unit15
p-block-elements
q81
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
$2D_2O\overset{electrolysis}{\rightarrow}$
jeemain
chemistry
unit15
p-block-elements
q80
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
$Mg_3N_2+6D_2O\rightarrow x$
jeemain
chemistry
unit15
p-block-elements
q79
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
$CaO+D_2O\rightarrow Ca(OD)_2\downarrow$
jeemain
chemistry
unit15
p-block-elements
q78
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
Water gas has
jeemain
chemistry
unit15
p-block-elements
q77
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
The empirical formulae for zeolites
jeemain
chemistry
unit15
p-block-elements
q76
sec-a
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
Orthosilicates have
jeemain
chemistry
unit15
p-block-elements
q75
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
$2R-Cl+Si\overset{Cu/300^{\large\circ}C}{\rightarrow}Organosilicon$
jeemain
chemistry
unit15
p-block-elements
q74
difficult
asked
Nov 29, 2013
by
sreemathi.v
1
answer
When $SiO_2$ is beated with C in an electric formula
jeemain
chemistry
unit15
p-block-elements
q73
difficult
asked
Nov 28, 2013
by
sreemathi.v
1
answer
Quartz is form of
jeemain
chemistry
unit15
p-block-elements
q72
difficult
asked
Nov 28, 2013
by
sreemathi.v
1
answer
The formulae of ferric alum
jeemain
chemistry
unit15
p-block-elements
q71
difficult
asked
Nov 28, 2013
by
sreemathi.v
1
answer
$B_2H_6+HCl\overset{catalyst}{\rightarrow}B_2H_5Cl+H_2\uparrow$.The catalyst is
jeemain
chemistry
unit15
p-block-elements
q70
difficult
asked
Nov 28, 2013
by
sreemathi.v
1
answer
When $B_2H_6$ reacts with $H_2O$ or alkalies and produces $x+y$ is liberated.The $y$ liberated is
jeemain
chemistry
unit15
p-block-elements
q69
difficult
asked
Nov 28, 2013
by
sreemathi.v
1
answer
When $B_2H_6$ reacts with $H_2O$ or alkalies and produces $x+y$ is liberated.The $x$ is
jeemain
chemistry
unit15
p-block-elements
q68
difficult
asked
Nov 28, 2013
by
sreemathi.v
1
answer
Borazole is also known as
jeemain
chemistry
unit15
p-block-elements
q67
difficult
asked
Nov 28, 2013
by
sreemathi.v
1
answer
The colour of cobalt metaborate is
jeemain
chemistry
unit15
p-block-elements
q65
difficult
asked
Nov 28, 2013
by
sreemathi.v
1
answer
$CoSO_4+B_2O_3\rightarrow$(Bead).From this equation the Bead is
jeemain
chemistry
unit15
p-block-elements
q64
difficult
asked
Nov 28, 2013
by
sreemathi.v
1
answer
Refer to the below equation :
jeemain
chemistry
unit15
p-block-elements
q63
difficult
asked
Nov 28, 2013
by
sreemathi.v
1
answer
Refer to the below equation :
jeemain
chemistry
unit15
p-block-elements
q62
difficult
asked
Nov 28, 2013
by
sreemathi.v
1
answer
$5H_2O+NaB_4O_7+2HCl\rightarrow 2NaCl+x$. In this equation the $x$ is
jeemain
chemistry
unit15
p-block-elements
q61
difficult
asked
Nov 28, 2013
by
sreemathi.v
1
answer
$HBr$ is weaker acid than HI due to
jeemain
chemistry
unit15
p-block-elements
q60
sec-a
medium
asked
Nov 28, 2013
by
sreemathi.v
1
answer
The reactivity $Na_2O$ going to $K_2O$
jeemain
chemistry
unit15
p-block-elements
q59
medium
asked
Nov 28, 2013
by
sreemathi.v
1
answer
Silicon belongs to which category?
jeemain
chemistry
unit15
p-block-elements
q58
medium
asked
Nov 28, 2013
by
sreemathi.v
1
answer
Each carbon in diamond is __________ hybridization
jeemain
chemistry
unit15
p-block-elements
q57
medium
asked
Nov 28, 2013
by
sreemathi.v
1
answer
Oxygen belongs to which category?
jeemain
chemistry
unit15
p-block-elements
q56
medium
asked
Nov 28, 2013
by
sreemathi.v
1
answer
The stability of which is correct ?
jeemain
chemistry
unit15
p-block-elements
q55
medium
asked
Nov 28, 2013
by
sreemathi.v
1
answer
Flurine forms how many salts with xenon?
jeemain
chemistry
unit15
p-block-elements
q54
medium
asked
Nov 28, 2013
by
sreemathi.v
1
answer
Graphite's lubricant nature in moon
jeemain
chemistry
unit15
p-block-elements
q53
medium
asked
Nov 28, 2013
by
sreemathi.v
1
answer
With excess of $Cl_2$ ammonia forms
jeemain
chemistry
unit15
p-block-elements
q52
medium
asked
Nov 28, 2013
by
sreemathi.v
1
answer
$H_2B_4O+5H_2O\rightarrow x$. $x$ is
jeemain
chemistry
unit15
p-block-elements
q51
medium
asked
Nov 28, 2013
by
sreemathi.v
1
answer
Hydrolysis of chloroform with aqueous KOH gives
jeemain
chemistry
unit15
p-block-elements
q50
medium
asked
Nov 28, 2013
by
sreemathi.v
1
answer
Which of the following doesn't participate in the solvay's process for manufacture of $Na_2CO_3$
jeemain
chemistry
unit15
p-block-elements
q49
medium
sec-a
asked
Nov 28, 2013
by
sreemathi.v
1
answer
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