Self Studies
Self Studies
Self Studies
Self Studies

Chemistry Test - 14

Result Self Studies

Chemistry Test - 14
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    4 / -1

    Directions: Consider the following reaction.

    CH3CHO+HCN→CH3CH(OH)CN (in presence of HOH)→CH3CH(OH)COOH

    In this reaction, an asymmetric center is generated. The acid obtained would be

    Solution

    The carbonyl carbon being sp2-hybridised has a planar arrangement of threeσ bonds and the nucleophile (here CN-) can attack from both sides.

    Hence, the product formed is a 50% - 50% mixture of both enantiomers i.e., a racemic mixture is obtained.

    Therefore, 50% of molecules (lactic acid) will have the D-configuration and 50% will have the L-configuration.

  • Question 2
    4 / -1

    In which of the following compounds is sp2 hybridisation absent?

    Solution

  • Question 3
    4 / -1

    Diagonal relationship in the periodic table is shown by the elements of

    Solution

    A diagonal relationship is said to exist between certain pairs of diagonally adjacent elements in the second and third periods of the periodic table.

  • Question 4
    4 / -1

    The correct order for the wavelengths of absorption of the complexes of nickel in the visible region is

    Solution

    The order of the ligands in terms of splitting caused by them (Spectrochemical series) is H2O < NH3 < NO2.

    Greater the octahedral splitting, higher will be the energy barrier created for the electrons showing the d-d transitions, and shorter the wavelength of the light adsorbed.

    The correct order of the wavelengths of absorption of complexes of nickel in the visible region is [Ni(NO2)6]4- < [Ni(NH3)6]2+ < [Ni(H2O)6]2+.

  • Question 5
    4 / -1

    A plot of log x/m versus log p for the adsorption of a gas on a solid gives a straight line with slope equal to

    Solution

    Straight line equation is formed in this case.

    log x/m = log x + 1/n log P

    So, Y = C + mx

    So, the slope is equal to 1/n.

  • Question 6
    4 / -1

    Which of the following is the only amino acid which is non-chiral?

    Solution
    Glycine has no chiral carbon atom, so it is optical inactive, \(\quad \mathrm{NH}_{2}-\mathrm{CH}_{2}-\mathrm{COOH}\)
    (glycine)
  • Question 7
    4 / -1

    A compound whose molecules are super imposable on their mirror images, even when they contain asymmetric carbon atoms is called

    Solution

    A compound whose molecules are super imposable on their mirror images, even when they contain asymmetric carbon atoms is called a meso compound.

  • Question 8
    4 / -1

    Choose the correct order of the first ionisation energies of the corresponding elements.

    Solution

    The correct order will be Li > Na > K as the value of the first ionisation energy decreases on moving down the group in the periodic table.

  • Question 9
    4 / -1

    On hydrolysis, which of the following produces only glucose?

    Solution

    Maltose is converted to glucose by enzyme maltase.

  • Question 10
    4 / -1

    Biotin is an organic compound present in yeast. Its deficiency in diet causes dermatitis and paralysis. It is also known as

    Solution

    Biotin, also known as vitamin H or co-enzyme R, is a water-soluble B-complex vitamin (vitamin B7).

Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now