Recent questions tagged unit15

Silica is soluble in

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The element which can displace 3 other halogens from their compounds

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$Be^{2+}$ is isoelectronic with :

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Which of the following can be used as anaesthetic

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Quartz is a crystalline variety of

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Which one of the following element has highest first ionization potential?

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Which one of the following compounds in aqueous solution gives a white precipitate acid?

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The no of $\pi$ bonds in the product formed by passing acetylene through dil $H_2SO_4$ containing mercuric sulphate

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Select among the following one with largest size

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Hg sticks to surface of glass when it reacts with

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Bleaching action of $SO_2$ is due to

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The inert form of carbon is

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The element that can exhibit highest number of oxidation state

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Refer the below Table :

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$Ca(OH)_2+Cl_2\rightarrow CaOCl_2+H_2O$.This reaction can be used in

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What are the shapes & hybridization of $SO_2$ & $SO_3$

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$NCl_3+H_2O\rightarrow NH_3+x,PCl_3+3H_2O\rightarrow H_3PO_3+y$.The $x$ and $y$ are :-

asked Nov 27, 2013 by sreemathi.v

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Oxydazation states of oxygen are :

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The correct sequence is : For -Acidic Nature

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$SF_6$ is more reactive than $TeF_6$.The above statement is

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Bleaching powder formulae

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$IF_7$ hybridization

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$2NaOH+2F_2\rightarrow 2NaF+x+y$.$x$ & $y$ are

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$CO+Cl_2\overset{sun\;light}{\rightarrow}$$x$. $x$ is

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$CHCl_3$ is known as

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Structure of $HClO_4$ is

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Industrially chlorine is prepared

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Bond angle of $H_2O$ is

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Allotropes of oxygen are :

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Shape of $H_2S$ is

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How does stability of chalcogens vary

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Lithium doesn't form Alum

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DiBorane hybridazition is

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Borax formulate :

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The Reductance of 'ns' electrons towards participation in bond formation is known as

asked Nov 26, 2013 by sreemathi.v

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The structure of $N_2O$ is

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The reducing nature of the hydrides

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In the following which is correct in stability order

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Name the metalloid present in V A Group

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$NO$ belongs to which category?

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Stability order of VA group hydrides is

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What acts as a catalyst in cyanamids process

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The Bond angle of Ammonia

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Metallic nature in V-A elements

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$NH_3$ can be prepared by

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Which acid is manufactured by Ostwald's process

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The general electronic configuration of p-block elements is

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If $u=\sqrt{a^2\cos^2\theta+b^2\sin^2\theta}+\sqrt{a^2\sin^2\theta+b^2\cos^2\theta}$ then the difference between the maximum and minimum values of $u^2$ is given by

asked Oct 17, 2013 by sreemathi.v

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Which of the following number is/are rational?

asked Oct 10, 2013 by sreemathi.v

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