What is the Chemical formula of Zinc Hydroxide _________ ?
A. Zn(OH)2
B. ZNO2
C. Zn2(OH)3
D. ZnOH
Submitted by :- Jamil Ahmed
The valency of carbon Atom is __________ ?
A. 1
B. 2
C. 3
D. 4
Submitted by :- Jamil Ahmed
Which law states that the rate of the effusion of a gas is inversely proportional to the square root of its density?
A. Graham’s Law
B. Gay-Lussac’s law
C. Boyle’s law
D. None of these
Submitted by :- Jamil Ahmed
Which law states that the volume of a given amount of gas held at constant pressure is directly proportional to the Kelvin temperature?
A. Charles’ Law
B. Avogadro’s Law
C. Graham’s Law
D. Boyle’s law
Submitted by :- Jamil Ahmed
Which law states that “equal volumes of all gases, at the same temperature and pressure, have the same number of molecules?
A. Boyle’s law
B. Charles’ law
C. Gay-Lussac’s law
D. Avogadro’s law
Submitted by :- Jamil Ahmed
Which of the following noble gases is abundant in air?
A. Neon
B. Helium
C. Argon
D. Methane
Submitted by :- Jamil Ahmed
Which of the following noble gases is not present in atmosphere?
A. Argon
B. Helium
C. Radon
D. Xenon
Submitted by :- Jamil Ahmed
For a given mass of a gas at constant temperature, if the value V becomes 3 times, the pressure will becomes__________?
The reciprocal of the coefficent of viscosity is called__________?
A. Density
B. Specific gravity
C. Fluidity
D. Absorbance
Submitted by :- Jamil Ahmed
The science of fermentation is called _______ ?
A. Zygology
B. Zymology
C. Zymurgy
D. Zootaxy
Submitted by :- Jamil Ahmed