Periodic Table MCQ Quiz - Objective Question with Answer for Periodic Table - Download Free PDF

The correct answer is Al & P.

Key Points

• In the modern periodic table, Silicon (Z = 14) is placed between Al and P.
  • Silicon has an atomic number 14 and the outer electronic configuration is 3s² 3ps².
  • It is placed at the 3rd Period and 14th Group number.

Additional Information

• Silicon, the second most abundant element on earth, is an essential part of the mineral world.
  • Its stable tetrahedral configuration makes it incredibly versatile and is used in various ways in our everyday lives.
  • Found in everything from spaceships to synthetic body parts, silicon can be found all around us, and sometimes even in us.
  • Silicon is a crystalline semi-metal or metalloid.
  • ​It is a group 14 element in the same periodic group as carbon but chemically behaves distinctly from all of its group counterparts.
  • Silicon shares the bonding versatility of carbon, with its four valence electrons, but is otherwise a relatively inert element. 

The correct answer is p block.

Key Points

• In the modern periodic table metals, metalloids and non-metals are found in the p-block which is in the right-hand side of the chart.
• The atoms of the elements of which the last electron from their outer shell inters p- subshell is called P-block elements.
• The general electronic configuration of P-block elements is  nS2nP1-6. 
• From Group 13 to Group 18 in the periodic table are P- Block Elements.
• P-Block elements have some common names according to their Group. 
  • Group 13 (Icosagens),
  • Group 14 (Carbon Family), 
  • Group 15 (Pnictogens), 
  • Group 16 (Chalcogens), 
  • Group 17 (Halogens), 
  • Group 18 ( Noble Gases).
• It is interesting to note that the non-metals and metalloids exist only in the p-block of the periodic table.

Additional Information 

CONCEPT:

Neutral Oxides

• Neutral oxides are oxides that do not show acidic or basic behavior when dissolved in water.
• They do not react with acids or bases to form salts.
• Common examples of neutral oxides include carbon monoxide (CO), nitrous oxide (N₂O), and water (H₂O).

EXPLANATION:

• CO: Carbon monoxide is a neutral oxide. It does not react with acids or bases.
• CO₂: Carbon dioxide is an acidic oxide because it reacts with bases to form salts.
• Na₂O: Sodium oxide is a basic oxide because it reacts with acids to form salts.
• MgO: Magnesium oxide is also a basic oxide because it reacts with acids to form salts.

Since CO does not show acidic or basic behavior, it is classified as a neutral oxide.

Therefore, the correct answer is CO.

Key PointsGunmetal, also known as red brass, is a type of bronze  an alloy of copper, tin, and zinc. Proportions vary by source, but 88% copper, 8-10% tin, and 2-4% zinc is an approximations. 

• It was used mainly for making guns and bullets. Now it is superseded by Steel.
• Gunmetal is used extensively for making heavy machinery parts as it can withstand high pressure and is corrosion resistant.

Additional Information

K2CO3 or potassium carbonate is known as pearl ash.

• Pearl ash, in ancient times, was created by baking potash in a kiln in order to remove impurities. The remaining fine, white powder was pearl ash.
• Potassium carbonate is an inorganic compound and a white salt which is soluble in water.
• It is mainly used in the production of glass and soap.

Additional Information

The correct answer is option 1, i.e  Alkali Metals.

EXPLANATION:

• The elements in the first group of s-block are also known as Alkali Metals. These have only one electron in their outermost shell and hence are quite reactive as they easily lose their electron to form bonds with non-metals.

• The elements in the second group of s-block are also known as Alkaline Earth Metals. These have two electrons in their outermost shell and are less reactive than Alkali metals.
• Halogens are the group 17 elements and are placed in the p-block.
• Noble gases are the group 18 elements and are placed in the p-block. These are the least reactive amongst all the elements found in the periodic table as they have a stable configuration.

The Correct Answer is Option (4) i.e. Potassium.

• Potassium belongs to the group of alkali metals and belongs to the group-1 of the periodic table which lies in the s-block of the periodic table.
• The alkali metals consist of the chemical elements lithium, sodium, potassium, rubidium, cesium, and francium.
• The alkaline earth metals are six chemical elements in group-2 of the periodic table.
• Beryllium, Magnesium, Calcium, Strontium, Barium, and Radium are the six elements of the group of alkaline earth metals.

The correct answer is Preserving pickle.

Key Points

• Sodium hydroxide (NaOH) is known as 'caustic soda' and it is a 'high-base' alkali.
• It is used in the manufacture of pulp and paper cloth, drinking water, soap, and detergent.
• In the field of medicine, sodium hydroxide is used for the treatment, control, prevention, and improvement of diseases.

Hint

• Sodium benzoate is used as a preservative for carbonated drinks, jams and fruit juices, and pickles.

The correct answer is Both of them undergo sublimation.

Important Points

• Both camphor and ammonium chloride are solid at room temperature.
• But they are vaporised (gas phase) when heat is applied.
  • This property is called Sublimation.

Key Points

• Sublimation - Direct conversion of a solid into the vapour state is called sublimation.
• The heat of sublimation - Heat required to change a unit mass of solid directly into vapour, at a given temperature, is called the heat of sublimation at that temperature.

Additional Information

• Camphor:
  • Colourless or white crystalline powder, flammable, waxy with a strong mothball-like odour.
  • Molecular Formula: C₁₀H₁₆O.
  • Organic compound.
• Ammonium chloride:
  • Molecular Formula: NH₄Cl
  • Also, called sal ammoniac (White crystalline salt).
  • Inorganic compounds and highly soluble in water, alcohol, methanol, glycerol, etc.
  • Ammonium Chloride gives an acidic solution by dissolving in water.
  • Inorganic compound.

Key PointsGunmetal, also known as red brass, is a type of bronze  an alloy of copper, tin, and zinc. Proportions vary by source, but 88% copper, 8-10% tin, and 2-4% zinc is an approximations. 

• It was used mainly for making guns and bullets. Now it is superseded by Steel.
• Gunmetal is used extensively for making heavy machinery parts as it can withstand high pressure and is corrosion resistant.

Additional Information

The correct answer is Ethanol.

Key Points

• Ethanol, anhydrous ethyl alcohol has a chemical formula of C2H5OH or CH3CH2OH.
• It can be produced from sugarcane, maize, wheat, etc which are having high starch content. 
• Ethanol can be mixed with the gasoline to form different blends. 
• As the ethanol molecule contains oxygen, it allows the engine to completely combust the fuel, resulting in fewer emissions and thereby reducing the occurrence of environmental pollution.

Additional Information

The correct answer is Argon.

Key Points

• Argon has all filled orbitals as well as a filled valence shell.
• As a result, it doesn’t want to lose or gain any electrons.
• Hence, argon has the lowest electron affinity.

Important Points

• Electron affinity is the change in energy of a neutral atom (gaseous phase) when an electron is added to the atom to form a negative ion.
  • Electron affinity increases from left to right in the Periodic Table.
  • Electron affinity decreases down the groups.
• The electronic affinity of the Noble gases, Alkali metals, and Alkali earth metals are close to zero.

Additional Information

Fluorine

• Atomic number: 9.
• Symbol: F.
• Most electronegative element.
• First isolated by Henri Moissan.

Bromine

• Atomic number: 35.
• Symbol: Br.
• It is the third-lightest halogen and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas.
• Its properties are thus intermediate between those of chlorine and iodine.

• Atomic number 17.
• Symbol Cl.
• Discovered by Carl Wilhelm Scheele.
• Second-lightest of the halogens.

The correct answer is Limestone.

Key Points

• Limestone is the main ingredient of cement.
  • Limestone is a sedimentary type of rock naturally found on earth.
  • Limestone rock primarily contains calcium carbonate i.e CaCO3.
  • Quartz, clay minerals, pyrite, siderite and feldspar etc. are other minerals found in limestone.
  • It is known by other names like- chalk, coquina, travertine, tufa, lithographic limestone. oolithic limestone etc.

The main ingredients of cement are as follows-

Additional Information 

Other uses of limestone-

The correct answer is Zn.

Key Points

• Zinc is a chemical element with the symbol Zn and atomic number 30.
• Atomic Number is defined as the number of protons in the nucleus of an element.
• It is used to determine the characteristics of an element and it is also referred to for placing an element in the Periodic Table.
• The Atomic Number of Zinc (Zn) is 30 whereas the Mass Number is 65 i.e. it has 35 neutrons.
• It is the first element in group 12 (IIB) of the periodic table.
• Zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn²⁺ and Mg²⁺ ions are of similar size.

Additional Information