Recent questions in 2016

Which of the following statements about the composition of the vapour over an ideal 1 : 1 molar mixture of benzene and toluene is correct ? Assume that the temperature is constant at $25^oC$ . (Given, Vapour Pressure Data at $25^oC$ , benzene = 12.8 kPa, toluene = 3.85 kPa)

asked Aug 21, 2018 by pady_1

1 answer

Lithium has a bcc structure. Its density is $530\; kg\; m^{–3}$ and its atomic mass is $6.94\; g \;mol^{–1}$ . Calculate the edge length of a unit cell of Lithium metal. (NA = $6.02 \times 10^{23} mol^{–1}$ )

asked Aug 21, 2018 by pady_1

1 answer

Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape ?

asked Aug 21, 2018 by pady_1

1 answer

Which one of the following orders in correct for the bond dissociation enthalpy of halogen molecules ?

asked Aug 21, 2018 by pady_1

1 answer

Fog is a colloidal solution of :

asked Aug 21, 2018 by pady_1

1 answer

The product obtained as a result of a reaction of nitrogen with $CaC_2$ is

asked Aug 21, 2018 by pady_1

1 answer

Which of the following reagents would distinguish cis-cyclopenta-1, 2-diol from the trans-isomer ?

asked Aug 21, 2018 by pady_1

1 answer

In Which of the following options the order of arrangement does not agree with the variation of property indicate against it ?

asked Aug 21, 2018 by pady_1

1 answer

Natural rubber has :

asked Aug 21, 2018 by pady_1

1 answer

The correct thermodynamic conditions for the spontaneous reaction at all temperatures is :

asked Aug 21, 2018 by pady_1

1 answer

Which one of the following statements is correct when $SO_2$ is passed through acidified $K_2Cr_2O_7$ solution ?

asked Aug 21, 2018 by pady_1

1 answer

Consider the molecules $CH_4, NH_3$ and $H_2O$ . Which of the given statements is false?

asked Aug 21, 2018 by pady_1

1 answer

The pair of electron in the given carbanion, $CH_3 C \equiv C^{\Theta}$ , is present in which of the following orbitals ?

asked Aug 21, 2018 by pady_1

1 answer

Which is the correct statement for the given acids ?

asked Aug 21, 2018 by pady_1

1 answer

Which of the following is an analgesic ?

asked Aug 21, 2018 by pady_1

2 answers

Match item of Column I with the items of Column II and assign the correct code :

asked Aug 21, 2018 by pady_1

1 answer

In a protein molecule various amino acids are linked together by:

asked Aug 21, 2018 by pady_1

1 answer

The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon, is:

asked Aug 21, 2018 by pady_1

1 answer

Match the compounds given in column I with the hybridisation and shape given in column II and mark the correct option.

asked Aug 21, 2018 by pady_1

1 answer

Which one of the following characteristics is associated with adsorption ?

asked Aug 21, 2018 by pady_1

1 answer

The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is:

asked Aug 21, 2018 by pady_1

1 answer

At $100^oC$ the vapour pressure of a solution of $6.5 \;g$ of a solute in $100\; g$ water is $732\; mm$ . If $K_b = 0.52$ , the boiling point of this solution will be:

asked Aug 21, 2018 by pady_1

1 answer

The electronic configurations of Eu (Atomic No. 63), Gd(Atomic No. 64) and Tb (Atomic No. 65) are:

asked Aug 21, 2018 by pady_1

1 answer

The reaction can be classified as :

asked Aug 21, 2018 by pady_1

1 answer

Two electrons occupying the same orbital are distinguished by:

asked Aug 21, 2018 by pady_1

1 answer

For the following reactions: Which of the following statements is correct ?

asked Aug 21, 2018 by pady_1

1 answer

When copper is heated with conc. $HNO_3$ it produces:

asked Aug 21, 2018 by pady_1

1 answer

The correct statement regarding the basicity of arylamines is:

asked Aug 21, 2018 by pady_1

1 answer

Predict the correct order among the following:

asked Aug 21, 2018 by pady_1

1 answer

The addition of a catalyst during a chemical reaction alters which of the following quantities ?

asked Aug 21, 2018 by pady_1

2 answers

Ask Questions, Get Answers

Which of the following statements about the composition of the vapour over an ideal 1 : 1 molar mixture of benzene and toluene is correct ? Assume that the temperature is constant at $25^oC$ . (Given, Vapour Pressure Data at $25^oC$ , benzene = 12.8 kPa, toluene = 3.85 kPa)

Lithium has a bcc structure. Its density is $530\; kg\; m^{–3}$ and its atomic mass is $6.94\; g \;mol^{–1}$ . Calculate the edge length of a unit cell of Lithium metal. (NA = $6.02 \times 10^{23} mol^{–1}$ )

Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape ?

Which one of the following orders in correct for the bond dissociation enthalpy of halogen molecules ?

Fog is a colloidal solution of :

The product obtained as a result of a reaction of nitrogen with $CaC_2$ is

Which of the following reagents would distinguish cis-cyclopenta-1, 2-diol from the trans-isomer ?

In Which of the following options the order of arrangement does not agree with the variation of property indicate against it ?

Natural rubber has :

The correct thermodynamic conditions for the spontaneous reaction at all temperatures is :

Which one of the following statements is correct when $SO_2$ is passed through acidified $K_2Cr_2O_7$ solution ?

Consider the molecules $CH_4, NH_3$ and $H_2O$ . Which of the given statements is false?

The pair of electron in the given carbanion, $CH_3 C \equiv C^{\Theta}$ , is present in which of the following orbitals ?

Which is the correct statement for the given acids ?

Which of the following is an analgesic ?

Match item of Column I with the items of Column II and assign the correct code : <br>

In a protein molecule various amino acids are linked together by:

The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon, is:

Match the compounds given in column I with the hybridisation and shape given in column II and mark the correct option. <br>

Which one of the following characteristics is associated with adsorption ?

The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is:

At $100^oC$ the vapour pressure of a solution of $6.5 \;g$ of a solute in $100\; g$ water is $732\; mm$ . If $K_b = 0.52$ , the boiling point of this solution will be:

The electronic configurations of Eu (Atomic No. 63), Gd(Atomic No. 64) and Tb (Atomic No. 65) are:

The reaction <br> <br> can be classified as :

Two electrons occupying the same orbital are distinguished by:

For the following reactions: <br> <br> Which of the following statements is correct ?

When copper is heated with conc. $HNO_3$ it produces:

The correct statement regarding the basicity of arylamines is:

Predict the correct order among the following:

The addition of a catalyst during a chemical reaction alters which of the following quantities ?