Options:
- A. environment
- B. surrounding
- C. state function
- D. enthalpy
View Answer
C. state function
Chemistry
When substance moves from a solid to a liquid state all of the following changes occur except__________________?
Options:
- A. Molecules become more disordered
- B. K.E of the molecules decreases
- C. Intermolecular forces become weaker
- D. Molecule become further separated
View Answer
B. K.E of the molecules decreases
Isomerism which is present only in alkene is__________________?
Options:
- A. structural isomerism
- B. metamerism
- C. cis-trans isomerism
- D. both b and c
View Answer
C. cis-trans isomerism
Coal is produced after a long time decay of_________________?
Options:
- A. animals
- B. fossils
- C. wood
- D. all of the above
View Answer
C. wood
Compound containing benzene ring in their structure are __________________?
Options:
- A. aliphatic
- B. aromatic
- C. carboxylic acid
- D. carbohydrates
View Answer
B. aromatic
Crude oil is blackish coloured liquid produced after the decay of organic matter present between_________________?
Options:
- A. earth layer
- B. mountains
- C. sedimentary rocks
- D. rocks
View Answer
C. sedimentary rocks
Which of the following is an amide________________?
Options:
- A. R-NH2
- B. RCONH2
- C. R
- D. C6H5NH2
View Answer
B. RCONH2
At low temperature and pressure cracking can be done in presence of catalyst________________?
Options:
- A. Al2O3
- B. Fe2O3
- C. Al2O3 and SiO2
- D. Fe2O3 and SiO2
View Answer
C. Al2O3 and SiO2
Only sigma bonds are present in__________________?
Options:
- A. propene
- B. butanoic acid
- C. butanal
- D. ethoxy ethane
View Answer
D. ethoxy ethane
Which one of the following compounds shows intense knocking ?
Options:
- A. n-pentane
- B. iso-heptane
- C. iso-octane
- D. n-heptane
View Answer
D. n-heptane