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
Chemistry
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
Which of the following theories is superior to others__________________?
Options:
- A. VSEPR
- B. VBT
- C. MOT
- D. none of the above
View Answer
C. MOT
Benzene is a good solvent for__________________?
Options:
- A. fats
- B. resins
- C. iodine
- D. all the above
View Answer
D. all the above
Which of the following is not characteristics of reversible reaction__________________?
Options:
- A. whole amount of reactant does not change into product
- B. chemical equilibrium is established
- C. a catalyst changes the direction of reaction
- D. rate of forward reaction decreases as reaction proceeds
View Answer
C. a catalyst changes the direction of reaction
Which of the following element doesnot show allotropy_________________?
Options:
- A. Carbon
- B. Arsenic
- C. Nitrogen
- D. Sulphur
View Answer
C. Nitrogen
A solution has pH = 0 its H+ ion concentration is__________________?
Options:
- A. 1 x 10-1
- B. 1 x 10-14
- C. 1 x 10-7
- D. 1
View Answer
D. 1
Purines and pyrimidines are_________________?
Options:
- A. Enzymes
- B. Nitrogenous bases
- C. Carbohydrates
- D. Lipids
View Answer
B. Nitrogenous bases
1 mole of electron has mass in microgram_________________?
Options:
- A. 1.008 x 10-3
- B. 5.5 x 10-4
- C. 1.84 x 10-4
- D. 1.673 x 10-3
View Answer
B. 5.5 x 10-4
All the transition elements show_________________?
Options:
- A. Similar physical properties
- B. Similar chemical properties
- C. Both A and b
- D. None
View Answer
D. None