Science Biology MCQ-257

General Science-Biology objective Quiz for DelhiPolice, UPSC, CDS, RRB, MPPSC, PSU, SSC, NDA Exams



Which one of the following is sodium thio-sulfate?

 
 
 
 

Which one of the following is false concerning pure hydrazine?

 
 
 
 

The careful, thermal decomposition of solid ammonium nitrate will yield

 
 
 
 

The oxidation number of N in NO2 is

 
 
 
 

The primary commercial use of nitric acid is

 
 
 
 

Which of the following is the nitride ion?

 
 
 
 

Which pair of formula/name is incorrect?

 
 
 
 

The reaction between nitrogen dioxide and water is a

 
 
 
 

In the reaction of phosphorus with chlorine to form a phosphorus chloride, whether PCl3 or PCl5 forms depends on

 
 
 
 

What are the products of the reaction of PF3 (g) and water?

 
 
 
 

What are the products of the reaction of PCl3 (g) and water?

 
 
 
 

Which one of the following is false concerning buckminsterfullerene?

 
 
 
 

Of the following, which is most likely to form interstitial carbides?

 
 
 
 

Which of the following would produce the most strongly acidic aqueous solution?

 
 
 
 

How many pairs of unpaired electrons are there in one molecule of carbon monoxide?

 
 
 
 

What gas has the odour of bitter almonds?

 
 
 
 

Which of the following is not an allotropic form of carbon?

 
 
 
 

A carbonyl compound contains

 
 
 
 

Carbon dioxide is produced

 
 
 
 

Which of the following would produce the most strongly basic aqueous solution?

 
 
 
 

What is the function of the carbon fibers in a composite?

 
 
 
 

Addition of B2O3 to soda-lime glass

 
 
 
 

Replacement of Na2O by K2O in soda-lime glass results in

 
 
 
 

Replacement of CaO by PbO in soda-lime glass results in

 
 
 
 

Soda-lime glass contains