Options:
- A. copper
- B. ice
- C. diamond
- D. graphite
View Answer
A. copper
Chemistry
When aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show ?
Options:
- A. phenol is unsaturated
- B. 2-bromophenol is insoluble in water
- C. a hydroxy group makes the benzene ring more susceptible to electrophilic attack
- D. acid-base reaction
View Answer
C. a hydroxy group makes the benzene ring more susceptible to electrophilic attack
A solution can be both____________________?
Options:
- A. dilute and concentrated
- B. dilute and saturated
- C. saturated and unsaturated
- D. saturated and super saturated
View Answer
A. dilute and concentrated
Which of the following terms is not used for ionic compound ?
Options:
- A. formula unit
- B. empirical formula
- C. molecular formula
- D. formula mass
View Answer
C. molecular formula
Which one is true about isotope ?
Options:
- A. Same number of neutrons
- B. Same mass number
- C. Same physical properties
- D. Same chemical properties
View Answer
D. Same chemical properties
All the following variables are used to describle gases except__________________?
Options:
- A. pressure
- B. volume
- C. moles
- D. density
View Answer
D. density
The balanced chemical equation for the reaction which occurs when Be is added to water is____________?
Options:
- A. Be+2H2O?Be (OH)2+H2
- B. Be+H2O?Be (OH)2+H2
- C. Be+H2O?[Be (OH)4]+2+H2
- D. no reaction
View Answer
D. no reaction
If a graph is plotted between temperature on x-axis and volume on y-axis for 1 mole of gas then we get straight line which cuts the temperature exis at________________?
Options:
- A. 0?C
- B. 273.16K
- C. ?273.16 K
- D. ?273.16?C
View Answer
D. ?273.16?C
Consider the following redox reaction. Zn+dil HNO3? Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is__________________?
Options:
- A. 6
- B. 8
- C. 10
- D. 4
View Answer
C. 10
moles of each aluminium and oxygen react with each other to produce aluminium oxide. The amount of product formed is______________________?
Options:
- A. 0.18 mole
- B. 0.27 mole
- C. 0.24 mole
- D. 0.09 mole
View Answer
A. 0.18 mole