Options:
- A. Hydrogen bonding
- B. Vander Waals force
- C. Forces among the polar molecules
- D. Ionic bond
View Answer
B. Vander Waals force
Chemistry
If a buffer solution of higher pH than seven is to be made we use___________________?
Options:
- A. Strong acid and strong base
- B. Weak acid and strong base
- C. Weak acid and strong base
- D. Weak acid and its salt with strong base
View Answer
D. Weak acid and its salt with strong base
By decreasing the pressure the reaction will go to that direction where_________________?
Options:
- A. volume is decreased
- B. volume increased
- C. heat absorbed
- D. no. of moles of specie decreased
View Answer
B. volume increased
Which of the following is a macro nutrient ?
Options:
- A. boron
- B. iron
- C. copper
- D. carbon
View Answer
D. carbon
Pollutants have adverse effect over_________________?
Options:
- A. Biosphere
- B. Ecosystem
- C. Both a & b
- D. Hydrosphere
View Answer
B. Ecosystem
Homogeneous mixture of two or more than two compounds is called__________________?
Options:
- A. solution
- B. compound
- C. radical
- D. ion
View Answer
A. solution
Which of the following substance do not show continuous solubility curve ?
Options:
- A. KCIO4
- B. Na2SO4. 10H2O
- C. K2Cr2O7
- D. PbCl2
View Answer
B. Na2SO4. 10H2O
Estimation of amounts of different components in a sample is________________?
Options:
- A. Quantitative analysis
- B. Qualitative analysis
- C. Stochiometery
- D. Physical chemistry
View Answer
A. Quantitative analysis
Rate of filtration can be increased by applying gentle suction______________?
Options:
- A. Gooch crucible
- B. Filter paper
- C. Sintered crucible
- D. All of the above
View Answer
B. Filter paper
The ionization energy__________________?
Options:
- A. Generally increases from left to right in a period
- B. Does not change in a period
- C. Increase from top to bottom in a group
- D. Does not change in a group
View Answer
A. Generally increases from left to right in a period