Cathodic protection of metals is based on
- A. standard electrode potential of hydrogen
- B. its electrical conductivity
- C. nature of oxides formed
- D. relative tendencies of oxidation
What is the relative molecular mass of the compound below?
![What is the relative molecular mass of the compound below [H = 1.0; C = 12.0; O = 16.0] - SchoolNGR](data:image/jpeg;base64,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)
[H = 1.0; C = 12.0; O = 16.0]
- A. 137
- B. 136
- C. 64
- D. 59
The ratio of carbon atoms of hydrogen atoms in a hydrocarbon is 1:2. If its molecular mass is 56, what is its molecular formula?
- A. C\(_{3}\)H\(_{6}\)
- B. C\(_{4}\)H\(_{8}\)
- C. C\(_{2}\)H\(_{4}\)
- D. CH\(_{2}\)
Which of the following oxide causes acid rain?
- A. CO
- B. NO
- C. H\(_{2}\)O\(_{2}\)
- D. NO\(_{2}\)
The hydrolysis of proteins by diluting mineral acids produces
- A. sucrose
- B. glucose
- C. amino acids
- D. fatty acids
The process by which salt and water reacted in a limited way to form an acid or a base is?
- A. Neutral process
- B. Basic acidic process
- C. Hydrolysis
- D. Sublimation
The fourteen elements (atomic number 90-103) after actinium are called?
- A. Actinoids
- B. Nucleotides
- C. Pre-actinum elements
- D. Atomic elements
The molar enthalpy change accompanying the removal of an electron from a gas phase atom or ion in its ground state is called?
- A. Electron gain enthalpy
- B. Ionization enthalpy
- C. Enthalpy change
- D. Enthalpic gas removal
In troposphere, the two types of pollutants are?
- A. Gaseous and particulate pollutants
- B. Carbon and metallic pollutants
- C. Natural and man-made pollutants
- D. Sulphuric and nitrogenous pollutants
One of the following is not a physical property of monosaccharides?
- A. Monosaccharides get charred when heated
- B. Monosaccharides are water-soluble, sweet substances
- C. They are highly vital to the exploration of metals
- D. They can be reduced to sugar alcohols
The compounds made up of only carbon and hydrogen are called?
- A. Carbon compounds
- B. Hydrocarbons
- C. Atoms
- D. Carbon hydrolysis
The process or act of extracting a metal from its ore and refining it is called?
- A. Extraction
- B. Metal mining
- C. Mettallurgy
- D. Prospecting
A binary compound of oxygen with another element is referred to as?
- A. Oxide
- B. Element
- C. Carbon
- D. Nitrogen
The reactions involving simultaneous oxidation and reduction?
- A. Automatic reactions
- B. Alternate reactions
- C. Reduction agency
- D. Redox reactions
A chemical process in which there is a gain of electrons is known as?
- A. Sublimation
- B. Reduction
- C. Oxidation
- D. Distillation
An element having the atomic number 17 will resemble which of the following elements having atomic number as given below?
- A. 33
- B. 35
- C. 18
- D. 19
The only metal that is anti-bacterial is?
- A. Iron
- B. Sodium
- C. Alluminium
- D. Copper
A solution contains 20g of solute in 180g of solvent. If the solvent is water, what is the concentration of the solution in terms of mass by mass percentage
- A. 11.%
- B. 22.2%
- C. 10%
- D. 20%
The nucleus of an atom consists of?
- A. Electrons and neutrons
- B. Electrons and protons
- C. Protons and neutrons
- D. None of the above
The metal used to recover copper from a solution of copper sulphate is?
- A. Na
- B. Ag
- C. Hg
- D. Fe
The nucleus of a hydrogen atom consist of a?
- A. 1 proton only
- B. 1 proton, 2 neutron
- C. 1 neutron only
- D. 1 electron only