The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is__________________?
A. Ethylene iodide
B. Ethylene bromide
C. Ethylene chloride
D. Ethylene fluoride
Submitted by :- Jamil Ahmed
mnsoomro
Acid present in acid rain may be_________________?
A. H2SO4
B. HNO3
C. both A and B
D. none of the above
Submitted by :- Jamil Ahmed
Which is carnalite________________?
A. KCI
B. NaCI
C. KCI MgCl2 6H2O
D. Na2CO3. 1H2O
Submitted by :- Jamil Ahmed
Which is the unit of (K) rate constant for zero order reaction ?
A. s-1
B. mol dm-3 s-1
C. mol-1 dm3 s-1
D. mol-2 dm6 s-1
Submitted by :- Jamil Ahmed
Which of the following can be used in laptops ?
A. Silver oxide battery
B. Fuel cell
C. Nickel cadmium cell
D. Lead accumulator
Submitted by :- Jamil Ahmed
Which of the following solution has the highest boiling point ?
A. 5.85% NaCl Solution
B. 18.0 % glucose solution
C. 6.0 % urea solution
D. All have same boiling point
Submitted by :- Jamil Ahmed
Quantum number values for 3p orbitals are____________________?
A. n=3 l=2
B. n=3 l=
C. n=3 l=1
D. n=3 l=3
Submitted by :- Jamil Ahmed
Only London dispersion forces are present among the_________________?
A. Molecules of water in liquid state
B. Atoms of helium in gaseous state at high temperature
C. Molecules of hydrogen chloride gas
D. Molecules of solid iodine
Submitted by :- Jamil Ahmed
The molecules of CO2 in dry ice form__________________?
A. Ionic crystal
B. Covalent crystal
C. Molecular crystal
D. Any type of crystal
Submitted by :- Jamil Ahmed
For industrial preparation of CH3CHO catalytic promoter is_________________?
A. PdCl2
B. Cu2Cl2
C. CuCl2
D. PbCl2
Submitted by :- Jamil Ahmed