Which of following is not a base______________?
Which of following is not a base______________?
A. KOH
B. NH3
C. PH3
D. BF3
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The weakest (in strength) of the following intermolecular forces is_______________?
The weakest (in strength) of the following intermolecular forces is_______________?A. Hydrogen bonding
B. Vander Waals force
C. Forces among the polar molecules
D. Ionic bondWhich molecule have stronger London dispersion forces?
Which molecule have stronger London dispersion forces?A. Hydrogen gas
B. Water
C. Bromine
D. Hydrochloric acidE0red of an element cab be calculated by comparing it with _____________________?
E0red of an element cab be calculated by comparing it with _____________________?A. New electrode of same element
B. SHE
C. 1M solution of ions of respective element
D. 2M solution of HCIGypsum is applied to the soil as a source of________________?
Gypsum is applied to the soil as a source of________________?A. Ca and P
B. S and P
C. Ca and S
D. we could not applyFor the generation of biogas, the materials commonly used are__________?
For the generation of biogas, the materials commonly used are__________?A. Animal wastes
B. Forest residues
C. Aquatic plants
D. None of theseBiogas typically refers to a gas produced by breakdown of organic matter in the absence of oxygen. Organic waste such as dead plant and animal material, animal feces, and kitchen waste can be converted into a gaseous fuel called biogas. Biogas originates from biogenic material and is a type of bio fuel. Biogas is produced by the anaerobic digestion or fermentation of biodegradable materials such as biomass, manure, sewage, municipal waste, green waste, plant material, and crops. Biogas comprises primarily methane (CH4) and carbon dioxide (CO2) and may have small amounts of hydrogen sulphide (H2S), moisture and siloxanes.
One mole of CO2 contains?
One mole of CO2 contains?A. 6.022 x 1023 atoms of oxygen
B. 22-gram electrons
C. 6.022 x 1023 atms of carbon
D. both B. & C.