Recent questions in Chemistry

Which of the following states the reason behind the formation of 'Tail of Comets' phenomenon in a colloidal solution?

asked Mar 17, 2014 by mosymeow_1

2 answers

Which of the following is INCORRECT?

asked Mar 17, 2014 by balaji.thirumalai

1 answer

The coagulating power of an electrolyte for arsenious sulphide sol decreases in the order:

asked Mar 17, 2014 by mosymeow_1

1 answer

STEM stands for

asked Mar 17, 2014 by mosymeow_1

1 answer

The colour of a colloidal solution depends upon

asked Mar 17, 2014 by mosymeow_1

2 answers

A colloidal solution of gold in water is

asked Mar 17, 2014 by mosymeow_1

1 answer

The average particle mass in colloidal solutions can be determined by

asked Mar 17, 2014 by mosymeow_1

1 answer

The CMC of a given soap in water is $10^{-3}$ mol/L. A $10^{-4}$ mol/L solution of this soap in water is a

asked Mar 17, 2014 by mosymeow_1

1 answer

Gold numbers of protective colloids A, B, C and D are 0.50, 0.01, 0.05 and 0.005 respectively. The correct order of their protective powers is

asked Mar 17, 2014 by mosymeow_1

1 answer

Langmuir adsorption isotherm is deduced using the assumption.

asked Mar 17, 2014 by mosymeow_1

1 answer

The reactions given below, are the catalyst and corresponding process / reaction are matched, the mismatch is

asked Mar 17, 2014 by mosymeow_1

1 answer

A plot of $\log \;\dfrac{x}{m}$ versus $\log\; p$ for the adsorption of a gas on a solid gives a straight line with slope equal to

asked Mar 17, 2014 by mosymeow_1

1 answer

The number of moles of lead nitrate needed to coagulate 2 mol of colloidal $[AgI]I^-$ is

asked Mar 17, 2014 by mosymeow_1

1 answer

Which among the following statements are correct with respect to adsorption of gases on a solid?

asked Mar 17, 2014 by mosymeow_1

1 answer

Cryolite is

asked Mar 17, 2014 by meena.p

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A basic lining is given to a furnace by using

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The coagulation of 200 mL of a positive colloid took place when 0.73 g HCl was added to it without changing the volume much. The flocculation value of HCl for the colloid is

asked Mar 17, 2014 by mosymeow_1

1 answer

What is the equation form of langmuir isotherm under high pressure?

asked Mar 17, 2014 by mosymeow_1

1 answer

When a metal is to be extracted from its ore and the gangue associated with the silica, then

asked Mar 17, 2014 by meena.p

2 answers

The impurities associated with minerals used in metallurgy are called collectively?

asked Mar 17, 2014 by meena.p

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A dye imparts red colour on fabric . What colour of light was absorbed by the dye ?

asked Mar 17, 2014 by yamini.v

1 answer

Which of the following is used to produce smoke screens?

asked Mar 17, 2014 by mosymeow_1

1 answer

The natural materials from which an element can be extracted economically are called

asked Mar 17, 2014 by meena.p

1 answer

An azo dye is formed by interaction of an aromatic diazonium chloride with

asked Mar 17, 2014 by yamini.v

1 answer

Given the following two statements, which of the following options that follow is TRUE?

asked Mar 17, 2014 by balaji

2 answers

In the commercial electrochemical process for aluminium extraction the electrolyte used is

asked Mar 17, 2014 by meena.p

1 answer

Red ink is prepared from

asked Mar 17, 2014 by yamini.v

1 answer

Cyanide process is used for the extraction of

asked Mar 17, 2014 by meena.p

1 answer

The substances which affect the central nervous system and induce sleep are called

asked Mar 17, 2014 by yamini.v

1 answer

The antiseptic present in Dettol is

asked Mar 17, 2014 by yamini.v

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The Oxide of a metal (R) can be reduced by the metal (p) while metal (R) can reduce the oxide of metal (Q) Here the decreasing order of the reactivity of metal (P) and (Q) and (R) with oxygen

asked Mar 17, 2014 by meena.p

1 answer

Which of the following is a common antacid ?

asked Mar 17, 2014 by yamini.v

1 answer

Penicillin was first discovered by

asked Mar 17, 2014 by yamini.v

1 answer

A substance which can act both as an antiseptic and disinfectant is

asked Mar 17, 2014 by yamini.v

1 answer

In the alminothermite process, aluminium acts as :-

asked Mar 17, 2014 by meena.p

1 answer

Identify the reaction that does not take place in blast fumace.

asked Mar 17, 2014 by meena.p

1 answer

' Placebo ' is often given to patients it is :

asked Mar 17, 2014 by yamini.v

1 answer

Which one of following reactions will occur on heating $AgNO_3$ above its melting point ?

asked Mar 17, 2014 by meena.p

1 answer

The drug used as an anti - depressant is

asked Mar 17, 2014 by yamini.v

1 answer

Composition of azurite mineral is

asked Mar 17, 2014 by meena.p

1 answer

Monel metal is an allay of

asked Mar 17, 2014 by meena.p

1 answer

Which of the following metal is extracted on smelting of are in blast furnance ?

asked Mar 17, 2014 by meena.p

1 answer

Artificial sweetener used in soft drinks is :

asked Mar 17, 2014 by yamini.v

1 answer

The Axles are made by heating rods of iron embedded in charcoal powder . This process is known as

asked Mar 17, 2014 by meena.p

2 answers

Wrought iron is

asked Mar 17, 2014 by meena.p

1 answer

Which method is based on distributive law?

asked Mar 17, 2014 by meena.p

1 answer

From gold auro cyanide $Na[Au(CN)_2]$ gold can be precipitated by adding powder of

asked Mar 17, 2014 by meena.p

1 answer

Oxygen is observed by molten $Ag$, Which is evolved on cooling and the silver particles are scattered; the phenomenon is known as

asked Mar 17, 2014 by meena.p

1 answer

Which of the following reactions is used to estimate Copper volumetrically ?

asked Mar 17, 2014 by meena.p

1 answer

Which of the following is a *** - attractant pheromone ?

asked Mar 17, 2014 by yamini.v

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