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
The heat required to raise the temperature of the body by 1k is called?
- A. Specific heat
- B. Thermal capacity
- C. Water equivalent
- D. None of the above
The most abundant rare gas in the atmosphere is?
- A. He
- B. Ne
- C. Ar
- D. Xe
The inherited traits of an organism are controlled by?
- A. RNA molecules
- B. Nucleotides
- C. DNA molecules
- D. Enzymes
The mass of one Avogadro number of helium atoms is?
- A. 1.00gram
- B. 4.00gram
- C. 8.00gram
- D. 6.00gram