Options:
- A. constitutive property
- B. additive property
- C. colligative property
- D. intrinsic property
View Answer
C. colligative property
Chemistry
In solids the temperature is the measure of__________________?
Options:
- A. Average kinetic energy of molecules
- B. Vibrational kinetic energy
- C. Translational kinetic energy
- D. None of the above
View Answer
B. Vibrational kinetic energy
At which electrode the reduction of the solution is occurring in Al-Ag cell_____________?
Options:
- A. A
- B. Ag
- C. Both
- D. Neither
View Answer
B. Ag
Fruit juices and fizzy drinks such as lemonade are often sold in aluminium cans. What is the most important reason aluminium is a suitable metal ?
Options:
- A. aluminium can be recycled
- B. aluminium has very low density
- C. aluminium is the most abundant metal in the earth crust
- D. aluminium is resistant to corrosion by organic acids.
View Answer
D. aluminium is resistant to corrosion by organic acids.
In which of the following type of reactions energy of reactant is greater than energy of product________________?
Options:
- A. endothermic
- B. exothermic
- C. unpredictable
- D. same
View Answer
B. exothermic
Which of following metals can be displaced by all other metals from its solution ?
Options:
- A. Ag
- B. A
- C. Au
- D. Cu
View Answer
C. Au
Which of the following properties prove that cathode rays are material in nature_________________?
Options:
- A. they cast shadow
- B. they possess momentum
- C. they are negatively charged
- D. all of the above
View Answer
B. they possess momentum
Which of the elements do not fall in stair case of the modern periodic table__________________?
Options:
- A. Si
- B. As
- C. Te
- D. None of the above
View Answer
D. None of the above
When an electron is moving with velocity of 2.188 x 106 ms-1 in the first orbit of Bohrs model of hydrogen. The de Broglie wavelength of electron is______________?
Options:
- A. 0.33 nm
- B. 0.34 nm
- C. 0.35 nm
- D. 0.36 nm
View Answer
A. 0.33 nm
Across short period the melting and boiling point increase upto __________________?
Options:
- A. IIIA group
- B. IVA group
- C. VA group
- D. VIA group
View Answer
B. IVA group