Class XI

The material which can be deformed permanently by heat and pressure is called a
  1. thermoplastic
  2. thermoset
  3. chemical compound
  4. polymer
O2 released in the process of photosynthesis comes from
  1. CO2
  2. water
  3. sugar
  4. pyruvic acid
The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is
  1. 2.05 gram
  2. 3.05 gram
  3. 4.05 gram
  4. 5.05 gram
The high reactivity of fluorine is due to
  1. its high electro negativity
  2. small size of fluorine atom
  3. availability of d-orbitals
  4. strong F - F bond
The method that cannot be used for removing permanent hardness of water is
  1. adding sodium carbonate
  2. distillation
  3. adding caustic soda
  4. boiling
Time Elapsed

HR : MIN : SEC
Question Answered
0
Score out of 100
0

Get Started!

we provide the best
services to our students

AmazingCounters.com Views

 

LKG - 12th

Rs 1,999  Annual
Plan
TOP