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Recent questions and answers in s-Block Elements

Questions >> JEEMAIN and NEET >> Chemistry >> s-Block Elements

why smaller the size of the cation - then greater is the hydration enthalpy?

answered Jan 21, 2015 by sharmaaparna1

1 answer

why enthalpy of hydration is negative?

answered Jan 21, 2015 by sharmaaparna1

1 answer

How can we say that Higher the metallic bonding , Higher is the electrical conductivity?

answered Jan 21, 2015 by sharmaaparna1

1 answer

When Sodium Chloride is dissolved in water, the sodium ion is:

answered Mar 16, 2014 by balaji.thirumalai

1 answer

A burning strip of Magnesium is introduced into a jar containing a gas. After sometime the walls of the container are coated with carbon. The gas in the container is:

answered Mar 15, 2014 by balaji.thirumalai

1 answer

Which of the following presents the correct sequence of increasing basic nature of given oxides?

answered Mar 15, 2014 by balaji.thirumalai

1 answer

Calcium oxide can be used for drying of

answered Jan 29, 2014 by sreemathi.v

1 answer

The thermal stability of $BaCO_3,CaCO_3$ and $MgCO_3$ is

answered Jan 29, 2014 by sreemathi.v

1 answer

Metals used in flash photography is

answered Jan 29, 2014 by sreemathi.v

1 answer

Gypsum is not chemically similar to

answered Jan 29, 2014 by sreemathi.v

1 answer

Alkaline earth metal(s) which does(do) not impact colour to the flame is(are)

answered Jan 29, 2014 by sreemathi.v

1 answer

Halides (Cl,Br and I) of alkaline earth metal which cannot be dehydrated by heating is (are)

answered Jan 29, 2014 by sreemathi.v

1 answer

Oxalates of alkaline earth metal(s) sparingly soluble in water (is) are

answered Jan 29, 2014 by sreemathi.v

1 answer

Alkaline earth metal sulphates which crystallises in hydrated form are

answered Jan 29, 2014 by sreemathi.v

1 answer

Slaked lime is obtained when water is added to

answered Jan 29, 2014 by sreemathi.v

1 answer

The compound insoluble in acetic acid is :

answered Jan 29, 2014 by sreemathi.v

1 answer

The pair of amphoteric hydroxides is :

answered Jan 29, 2014 by sreemathi.v

1 answer

Yellow phosphorous on reaction with $Ca(OH)_2$ gives

answered Jan 28, 2014 by sreemathi.v

1 answer

Which of the following is the strongest reducing agent?

answered Jan 28, 2014 by sreemathi.v

1 answer

The most active metal is

answered Jan 28, 2014 by sreemathi.v

1 answer

Portland cement does not contain :

answered Jan 28, 2014 by sreemathi.v

1 answer

Non metals present in borax are

answered Jan 28, 2014 by sreemathi.v

1 answer

The alkali metal used as coolant in nuclear reactors is

answered Jan 28, 2014 by sreemathi.v

1 answer

Glauber salt is a

answered Jan 28, 2014 by sreemathi.v

1 answer

Pearl ash is

answered Jan 28, 2014 by sreemathi.v

1 answer

Which among the compounds of alkali metals undergo hydrolysis

answered Jan 28, 2014 by sreemathi.v

1 answer

The alkali metal bi carbonate that has no existance in solid state is

answered Jan 28, 2014 by sreemathi.v

1 answer

Tincal contains mainly

answered Jan 28, 2014 by sreemathi.v

1 answer

What is the formula of calgon?

answered Jan 28, 2014 by sreemathi.v

1 answer

Which of the following is best $CO_2$ absorber as well as source of $O_2$ in space capsule?

answered Jan 28, 2014 by sreemathi.v

1 answer

Which of the following salts does not form any ppt with excess of NaOH ?

answered Jan 28, 2014 by sreemathi.v

1 answer

Considering greater polarization in lid compared to that in NaCl,which of the following statements you would expect to be wrong?

answered Jan 28, 2014 by sreemathi.v

1 answer

In castner-kellner cell used for the manufacture of NaOH,the cathode in the central compartment is made up of

answered Jan 28, 2014 by sreemathi.v

1 answer

The salt used for performing bead test in inorganic qualitative analysis is

answered Jan 28, 2014 by sreemathi.v

1 answer

Four alkali metals A,B,C and D are having standard electrode potentials as -3.05,-1.66,-0.40 and 0.80v respectively,which one will be the most reducing agent?

answered Jan 28, 2014 by sreemathi.v

1 answer

$CO+NaOH\rightarrow $?

answered Jan 28, 2014 by sreemathi.v

1 answer

The metal which gives brick red colour in flame test is

answered Jan 28, 2014 by sreemathi.v

1 answer

Oxides of alkaline earth metals are stable due to

answered Jan 28, 2014 by sreemathi.v

1 answer

The salt which gives crimson red colour in flame test is

answered Jan 28, 2014 by sreemathi.v

1 answer

Which of the following metals cannot give flame tests?

answered Jan 28, 2014 by sreemathi.v

1 answer

The electrical conductivity in aqueous solutions is high for

answered Jan 28, 2014 by sreemathi.v

1 answer

Which does not form peroxides?

answered Jan 28, 2014 by sreemathi.v

1 answer

Magnesium burns in air giving two products .Their formulae are

answered Jan 28, 2014 by sreemathi.v

1 answer

Oxygen evolves on heating

answered Jan 28, 2014 by sreemathi.v

1 answer

$BeH_2$ and $MgH_2$ are prepared using the reagent

answered Jan 28, 2014 by sreemathi.v

1 answer

The elements that reacts with cold water

answered Jan 28, 2014 by sreemathi.v

1 answer

The polorising power of $Mg^{2+}$ is nearly same as that of

answered Jan 28, 2014 by sreemathi.v

1 answer

Which of the following is less covalent?

answered Jan 28, 2014 by sreemathi.v

1 answer

Hardening of plaster of paris is because of

answered Jan 28, 2014 by sreemathi.v

1 answer

In the hardening stage of plaster of paris,the compound formed is

answered Jan 28, 2014 by sreemathi.v

1 answer

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