A scale which used to measure the Hydrogen Ion concentration in a solution is known as__________?
A. Thermometer
B. Viscometer
C. pH Scale
D. Stagmometer
Submitted by :- Jamil Ahmed
CHEMISTRY
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Which Compound Destroy The OZONE ?
A. CFCs
B. CH3COOH
C. BOTH A & B
D. None Of These
Submitted by :- Saqib Ali
Which of the following is an organic compound?
[A] Carbon disulfide – CS2
[B] Carbon monoxide – CO
[C] Carbon tetrabromide – CBr4
[D] Carbon tetrachloride – CCl4
[B] Carbon monoxide – CO
[C] Carbon tetrabromide – CBr4
[D] Carbon tetrachloride – CCl4
Submitted by :- Muhammad Nawaz
Which of the following is the product of the reaction between Ethanoic acid and Sodium hydrogen carbonate?
[A] Ethyne
[B] Sodium acetate
[C] Ethanol
[D] Sodium hydroxide
[B] Sodium acetate
[C] Ethanol
[D] Sodium hydroxide
Submitted by :- Muhammad Nawaz
Which of the following monomers produce Buna-n polymer?
[A] two parts of butadiene and styrene
[B] four parts of butadiene and one part of isobutylene
[C] two parts of butadiene and one part of acrylonitrile
[D] None of the above
[B] four parts of butadiene and one part of isobutylene
[C] two parts of butadiene and one part of acrylonitrile
[D] None of the above
Submitted by :- Muhammad Nawaz
Which is the first member of Alkyne series?
[A] Methyne
[B] Acetylene
[C] Propyne
[D] Ethene
[B] Acetylene
[C] Propyne
[D] Ethene
Submitted by :- Muhammad Nawaz
Where does the oxidation takes place in a Galvanic cell?
[A] Anode
[B] Cathode
[C] Oxidation does not take place
[D] None of the above
Submitted by :- Muhammad Nawaz
Which of the following quantum number determines the number of sub-shells?
[A] Electron spin quantum number
[B] Principal quantum number
[C] Magnetic quantum number
[D] Azimuthal quantum number
[B] Principal quantum number
[C] Magnetic quantum number
[D] Azimuthal quantum number
Submitted by :- Muhammad Nawaz
The Lanthanoids are part of which of the following block of elements in the periodic table?
[A] p-block
[B] s-block
[C] d-block
[D] f-block
[B] s-block
[C] d-block
[D] f-block
Submitted by :- Muhammad Nawaz
Which of the following is correct about Mendeleev’s Periodic Table?
[A] Argon is placed before Potassium
[B] Cobalt is placed before Nickel
[C] Tellurium is placed before iodine
[D] All of the above
[B] Cobalt is placed before Nickel
[C] Tellurium is placed before iodine
[D] All of the above
Submitted by :- Muhammad Nawaz