Elements which emit natural radioactivity are known as __________ ?
A. Radio elements
B. Active elements
C. Radioactive elements
D. Nuclear elements
Submitted by :- Jamil Ahmed
Alpha (α) particles are helium (He) nucleus with a charge of __________ ?
A. e
B. 2e
C. 3e
D. 4e
Submitted by :- Jamil Ahmed
The systematic name of sucrose is_______?
A. 1-α-D- glucopyranosyl-2-β-D-fructopyranoside
B. 11-α-D-glucopyranosyl-2-β-D-fructofuranoside
C. 1-α-D- glucofuranosyl-2-α-D- fructopyranoside
D. 1-β- D- glucofuranosyl-2-α- D- fructofuranoside
Submitted by :- Jamil Ahmed
How many isomeric aldoses are possible for the molecular formula C6H12O6?
A. 2
B. 4
C. 7
D.16
Submitted by :- Jamil Ahmed
The IUPAC name of pyridines is__________?
A. Azolo
B. Azine
C. Azolidins
D. Diazine
Submitted by :- Jamil Ahmed
Example of ‘globular’ proteins is __________ ?
A. Peptide
B. Enzymes
C. Primary protein
D. Secondary proteins
Submitted by :- Jamil Ahmed
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
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