MHT CET 2016 :: Chemistry :: General questions

• Chemistry - General questions

Primary nitroalkanes are obtained in good yield by oxidising aldoximes with the help of 

Answer:

Explanation:

Primary nitroalkanes are obtained in good yield by oxidising aldoximes with the help of trifluoroperoxy  acetic acid

Average rate of reaction for the following  reaction  $2SO_{2}(g)+O_{2}(g)\rightarrow 2SO_{3}(g)$   is written as

Answer:

Explanation:

The average rate of reaction is defined as the speed with which the reactants are converted  into products

For reaction, 

   $2SO_{2}(g)+O_{2}(g)\rightarrow 2SO_{3}(g)$

$-\frac{1}{2}\frac{\triangle[SO_{2}]}{\triangle t}=\frac{-\triangle[O_{2}]}{\triangle t}=+\frac{1}{2}\frac{\triangle[SO_{3}]}{\triangle t}$

 So, average rate of reaction  is written as  $-\frac{\triangle[O_{2}]}{\triangle t}$

Which of the following carboxylic acids is a tricarboxylic acid?

Answer:

Explanation:

Citric acid is a tricarboxylic acid

  $HOOC-(CH_{2})_{4}-COOH$

            Adipic acid

The most abundant noble gas in atmosphere is

Answer:

Explanation:

Argon is the most abundant noble gas in the atmosphere because most of it was  produced by a way lived radioisotope of Potassium in the earth crust

Identify the compound amongst the following of which 0.1 M aqueous solution has the highest boiling point

Answer:

Explanation:

As all the compounds have same concentration, i.e, 0.1M . Thus, the compound that will break into the most parts has highest boiling point.

Glucose (1 part, covalent ; does not ionise)

Sodium chloride (1 Na,1Cl ; ionises)

Calcium  chloride (1 Ca ,2Cl; ionise)

Ferric chloride (1Fe, 3Cl; ionises)

• Chemistry - General questions