Chemistry 1488 MCQs [All-Courses]

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When benzene is heated in air with V2O5 at 450°C yields_________________?

A Phenol

B Maleic anhydride

C Glyoxal

D Benzoic acid

Review Detailed Answer

Correct Answer: Maleic anhydride

In 1 – pentene -4- yne the carbon exhibit hybridization_________________?

A sp3 – sp2

B sp2 – sp

C sp2 – sp

D sp3 – sp2 – sp

Review Detailed Answer

Correct Answer: sp3 – sp2

Which one of the following looks odd__________________?

A H2SO4

B KMnO4

C H2S

D K2CrO4

Review Detailed Answer

Correct Answer: H2S

The most paramagnetic element is____________________?

A Iron

B Cobalt

C Chromium

D Manganese

Review Detailed Answer

Correct Answer: Iron

Which molecule has the highest bond energy among the halogens_________________?

A Fluorine

B Chlorine

C Iodine

D Bromine

Review Detailed Answer

Correct Answer: Chlorine

The most reactive allotropic form of phosphorus is________________?

A White

B Redox potential

C Black

D Violet

Review Detailed Answer

Correct Answer: White

Which is carnalite________________?

A KCI

B NaCI

C KCI MgCl2 6H2O

D Na2CO3. 10H2O

Review Detailed Answer

Correct Answer: KCI

Which is the unit of (K) rate constant for zero order reaction ?

A s-1

B mol dm-3 s-1

C mol-1 dm3 s-1

D mol-2 dm6 s-1

Review Detailed Answer

Correct Answer: s-1

Which of the following can be used in laptops ?

A Silver oxide battery

B Fuel cell

C Nickel cadmium cell

D Lead accumulator

Review Detailed Answer

Correct Answer: Nickel cadmium cell

Which of the following solution has the highest boiling point ?

A 5.85% NaCl Solution

B 18.0 % glucose solution

C 6.0 % urea solution

D All have same boiling point

Review Detailed Answer

Correct Answer: 5.85% NaCl Solution

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Chemistry 1488 MCQs [All-Courses]

All Topics 1488

All Topics 1488

When benzene is heated in air with V2O5 at 450°C yields_________________?

In 1 – pentene -4- yne the carbon exhibit hybridization_________________?

Which one of the following looks odd__________________?

The most paramagnetic element is____________________?

Which molecule has the highest bond energy among the halogens_________________?

The most reactive allotropic form of phosphorus is________________?

Which is carnalite________________?

Which is the unit of (K) rate constant for zero order reaction ?

Which of the following can be used in laptops ?

Which of the following solution has the highest boiling point ?