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Recent questions in Chemistry

Questions >> EAMCET >> Chemistry

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asked Nov 11, 2013 by meena.p

0 answers

Which of the following is not correct ?

asked Nov 11, 2013 by meena.p

0 answers

Which of the following is not correct?

asked Nov 11, 2013 by meena.p

0 answers

The compound prepared by a substitution reaction of benzene is :

asked Nov 11, 2013 by meena.p

1 answer

In which of the following reactions, $MgO$ is not formed?

asked Nov 11, 2013 by meena.p

1 answer

The pH of a solution of $H_2O_2$ is $6.0$. some chlorine gas is bubbled into this solution. Which of the following is correct ?

asked Nov 11, 2013 by meena.p

0 answers

Which of the following is a pair of functional isomers?

asked Nov 11, 2013 by meena.p

0 answers

Which of the following is not correct ?

asked Nov 11, 2013 by meena.p

0 answers

At $550 K,$ the $K_c$ for the following reaction is $10^{4}\;mol^{-1}\;L$

asked Nov 11, 2013 by meena.p

0 answers

Which of the following compounds is soluble in benzene but almost insoluble in water?

asked Nov 11, 2013 by meena.p

1 answer

Observe the following reaction : $2A +B \longrightarrow C$. The rate of formation of C is $2.2 \times 10^{-3}\;mol \;L^{-1} min ^{-1}.$ What is the value of $-\large\frac {d[A]}{dt}$ (in mol $L^{-1}\; min^{-1}$)?

asked Nov 11, 2013 by meena.p

0 answers

Which of the following is not correct ?

asked Nov 11, 2013 by meena.p

0 answers

Which of the following is not an air pollutant ?

asked Nov 11, 2013 by meena.p

0 answers

What is the quantity of electricity (in Coulombs) required to deposit all the silver from 250 mL of 1 M $AgNO_3$ solution ?

asked Nov 11, 2013 by meena.p

1 answer

Assertion (A) : The pH of a buffer solution containing equal moles of acetic acid and sodium acetate is 4.8 ($pK_a$ of acetic acid is 4.8). Reason (R) : The ionic product of water at $25^{\circ}C$ is $10^{-14}\;mol^{2}.L^{-2}.$

asked Nov 11, 2013 by meena.p

0 answers

Which of the following is not correct ?

asked Nov 11, 2013 by meena.p

0 answers

The vapour pressure of water at $23^{\circ} C$ is $19.8 \;mm. 0.1 $ mole of glucose is dissolved in $178.2\; g$ of water. What is the vapour pressure (in mm) of the resultant solution ?

asked Nov 11, 2013 by meena.p

0 answers

The following plants are devoid of some vital organs. Arrange these in the order of absence of roots , stem, leaf, flower and fruits respectively :

asked Nov 10, 2013 by thanvigandhi_1

1 answer

Which one of the following is the ratio of the lowering of vapour pressure of 0.1 m aqueous solutions of $ BaCI_2, NACI\: and \: AI_2(SO_4)_3$ respectively ?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

Under which one of the following conditions do real gases approach the ideal gas behaviour ?

asked Nov 9, 2013 by thanvigandhi_1

1 answer

19 gms of a mixture containing $NaHCO_3\: and \: Na_2CO_3$ on complete heating liberated 1.12 lit of $CO_2$ at STP. The weight of the remaining solid was 15.9 gms. What is the weight ( in g ) of $Na_2CO_3$ in the mixture before heating ?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

In which of the following pairs, the central atoms have the same number of lone pairs of electrons ?

asked Nov 9, 2013 by thanvigandhi_1

1 answer

The formal changes of $ N_{(1)}, N_{(2)}$ and $O$ atoms in : $ \ddot{N_{(1)}} =\ddot{N_{(2)}} = \ddot {O} : $ are respectively :

asked Nov 9, 2013 by thanvigandhi_1

0 answers

Which one of the following is correct order of second ionization potential of Na, Ne, Mg and AI?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

According to Bohr's theory, which one of the following values of angular momentum of hydrogen atom is not permitted ?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

Which one of the following frequencies of radiation ( in Hz) has a wavelength of 600 nm?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

Assertion (A) : Cyclohexane is the most stable Cycloalkane. Reasons (R) : Cyclopropane and cyclobutane are less stable due to angle strain and torsional strain.

asked Nov 9, 2013 by thanvigandhi_1

0 answers

0.16 gms of an organic compound containing sulphur produces 0.233 gms of $BaSO_4$. Percentage of sulphur in the compound is :

asked Nov 9, 2013 by thanvigandhi_1

0 answers

Which air pollutant is responsible for Bhopal gas tragedy ?

asked Nov 9, 2013 by thanvigandhi_1

1 answer

Which one of the following oxides is reduced by water gas to obtain the metal during its extraction ?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

Identify the order in which the spin only magnetic moment ( in BM) increases for the following four ions :

asked Nov 9, 2013 by thanvigandhi_1

0 answers

The hybridization of Xe and the number of lone pairs of electrons on it in $XeF_6$ are :

asked Nov 9, 2013 by thanvigandhi_1

0 answers

What is the bond angle $(\hat{OCIO})$ in $CIO_2$?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

What are the products formed when moist chlorine gas is reacted with hypo?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

The total number of $ \sigma\: and \: \pi$ bonds in pyrophosphoric acid are respectively :

asked Nov 9, 2013 by thanvigandhi_1

0 answers

Which one of the following is a correct set?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

Which one of the following statement is not correct?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

In which of the following reactions hydrogen is not liberated?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

Which property among the following is same for both hydrogen and deuterium molecules?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

Which one of the following gives a straight line for Freundlich adsorption isotherm?

asked Nov 9, 2013 by thanvigandhi_1

1 answer

What is the entropy change in $ J.K^{-1}$ during the melting of 27.3 grams of ice at $ 0^{\circ}C$ ? (Latent heat of fusion of ice = 330 $ j.g^{-1}$)

asked Nov 9, 2013 by thanvigandhi_1

0 answers

The pH of 0.05 M acetic acid is $ ( K_a = 2 \times 10^{-5} )$

asked Nov 9, 2013 by thanvigandhi_1

0 answers

If the equilibrium constant for the reaction $ 2AB \rightleftharpoons A_2+B_2 \: is \: 49$, what is the equilibrium constant for $ AB \rightleftharpoons \large\frac{1}{2}\: A_2 + \large\frac{1}{2}B_2$?

asked Nov 9, 2013 by thanvigandhi_1

0 answers

The vapour pressure of water at $23^{\circ}$ is $19.8\;mm. 0.1$ mole of glucose is dissolved in $178.2\;g$ of water. What is the vapour pressure (in mm) of the resultant solution ?

asked Nov 8, 2013 by meena.p

0 answers

A and B are ideal gases. The molecular weights of A and B are in the ratio of 1:4 . The pressure of a gas mixture containing equal weights of A and B is P atm. What is the partial pressure (in atm) of B in the mixture ?

asked Nov 8, 2013 by meena.p

0 answers

In the reaction

asked Nov 8, 2013 by meena.p

0 answers

x grams of calcium carbonate was completely burnt in air. The weight of the solid residue formed is 28 g. What is the value of x (in grams)?

asked Nov 8, 2013 by meena.p

0 answers

Which of the following is correct ?

asked Nov 8, 2013 by meena.p

0 answers

'Natalite' is used as:

asked Nov 8, 2013 by meena.p

1 answer

Which of the following is a linear molecule ?

asked Nov 8, 2013 by meena.p

0 answers

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