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The correct ANSWER is (C) hydrogenation

For explanation: Large scale production of HYDROGEN can be done by electrolysis of water or by thermochemical reaction cycle. Hydrogen FUEL has many advantages over conventional fuels that it is nonpolluting and it liberates a large amount of energy on COMBUSTION.

The correct option is (a) yes

Easiest EXPLANATION: Yes, dihydrogen can be USED as a FUEL and the process of USAGE of liquid hydrogen as an alternate source of energy is given by the term hydrogen economy. In the near future, there is a possibility of USING liquid hydrogen as a fuel.

The correct option is (c) renewable ENERGY

To elaborate: Photohydrogen as used to obtain renewable energy from sunlight. This can be possible by USING microscopic ORGANISMS such as bacteria or algae. This is also a FORM of OBTAINING energy through hydrogen.

Correct option is (a) true

The BEST I can EXPLAIN: The storage of hydrogen in LIQUID form can be done in vacuum INSULATED cryogenic tanks or in a metal or in an alloy like Iron Titanium alloy such as interstitial hydride. Hence, the above statement is true.

The correct OPTION is (b) PRODUCTION

Easiest explanation: Hydrogen economy is a technology that involves production, TRANSPORTATION, and storage of ENERGY in the form of liquid hydrogen as it is an alternate SOURCE of energy, there are many ways in which hydrogen can be used as fuel.

Right ANSWER is (d) ortho hydrogen

Explanation: When in the hydrogen molecule, the nucleus spins are in the same DIRECTION, it is known as orthohydrogen. When the spins are in the opposite direction, it is known as parahydrogen. At room TEMPERATURE hydrogen consists of 75% ortho and 25% para hydrogens.

The CORRECT answer is (b) occlusion

Explanation: Occlusion is nothing but the ABSORPTION of hydrogen at a metal surface which is a PRIMARY CAUSE of reduction, hydrogenation, etc. As the temperature increases, occlusion decreases i.e. they are dependent on each other.

Correct OPTION is (a) storage

For explanation: The PRODUCTION of hydrogen is very easy and its process is also simple because the availability is enormous in the atmosphere as well as in the FORM of water, but the problem comes in the storage because we need to STORE hydrogen in a high-pressure tank or in a cryogenic tank.

Right option is (b) D2SO4

To explain I would say: The formation of deuterosulphuric acid OCCURS when 1 mole of heavy water (D2O) reacts with ONE mole of SULFUR trioxide (SO3). The chemical formula of deuterosulphuric acid is GIVEN by D2SO4.

Correct option is (a) True

The best I can explain: Yes, heavy water is called a moderator because it is USED in NUCLEAR reactors to SLOW down the speed of NEUTRONS. Hence the above statement that ‘ heavy water is called as a moderator ’is considered to be true.

Correct OPTION is (d) Deuterium

For explanation I would say: The chemical FORMULA of heavy water is D2O, where D represents deuterium and O represents oxygen. Two ATOMS of deuterium and ONE ATOM of Oxygen combine to form heavy water (D2O).

The correct choice is (d) SODIUM deuteroxide

To explain: When one mole of heavy WATER reacts with one mole of sodium, it results in the FORMATION of 1 mole of sodium deuteroxide and HALF a mole of deuterium it is represented chemically as 1D2O + 1Na → 1NaOD + 1/2D2.

The CORRECT option is (d) D2O

To explain: HEAVY water is given by its chemical formula as D2O, it was discovered by Urey in the year 1932 and it can be PREPARED by exhaustive electrolysis of ORDINARY water using Nickel electrodes. It is generally COLORLESS, odorless and tasteless liquid.

The correct answer is (b) False

The explanation: Heavy WATER is formed by two ATOMS of deuterium and one atom of OXYGEN, whereas tritiated water is formed by two atoms of tritium and one atom of Oxygen. Heavy water is not RADIOACTIVE while tritiated water is Radioactive; THEREFORE the above statement is false.

The correct OPTION is (d) 11

Best explanation: The density of heavy water is 11 % greater than that of normal water, this happens because 89% of water or heavy waters MASS COMES from the single oxygen. The above thing is valid only when hydrogen peroxide is in its PURE form.

Correct CHOICE is (b) HDO

Easy EXPLANATION: Semi-heavy WATER is the MOLECULE which contains ONE atom of Hydrogen, an atom of hydrogen isotope that is deuterium and one atom of oxygen. Thus it is known as semi-heavy water. Its density is given as 1.054

The correct answer is (a) Yes

To explain I would say: Due to the presence of the isotope of hydrogen that is DEUTERIUM in HEAVY water there are MANY changes in the NUCLEAR properties. Also due to a slight increase in mass the physical properties and chemical properties also CHANGE.

The CORRECT choice is (c) Heavy water

Best explanation: One of the main IMPORTANT USE of heavy water is, it is used as a tracer compound in order to study the mechanism of many reactions, this is because of the DEUTERIUM present in heavy water which enables to study the mechanism.

The CORRECT option is (B) 10volume

Easy explanation: Generally a solution of hydrogen peroxide is labeled as 10volume, which actually means that 1 ml of such a solution of hydrogen peroxide on decomposition by heat produces 10 ml of oxygen at NTP.

Right answer is (d) 104.9

For explanation I WOULD say: In the solid form of HYDROGEN peroxide, the ANGLE between OXYGEN and hydrogen is 104.9 and the angle between the two planes is 92.5. In the liquid or gaseous form of hydrogen peroxide, the angle between oxygen and hydrogen as 94.8 and the angle between the two planes is 111.5

Right OPTION is (a) Teardrops

Explanation: HYDROGEN peroxide is used as a bleaching agent, disinfectant, source of POWER, in the restoration of OLD paintings in which lead oxide is used as a white paint, antiseptic and GERMICIDE. It is not used in teardrops.

Right choice is (B) Perhydrol

For explanation I would say: 30% of hydrogen PEROXIDE is called Perhydrol, which is used as an antiseptic and germicide for washing wounds, teeth, and EARS. The volume STRENGTH of Perhydrol is hundred and its molarity is given by 8.8

Correct answer is (C) Iodine

The EXPLANATION: When 2 moles of potassium iodide are reacted with 1 mole of HYDROGEN peroxide, 2 moles of potassium hydroxide and one mole of iodine is LIBERATED. That means hydrogen peroxide LIBERATES iodine from acidified potassium iodide.

Correct OPTION is (B) FALSE

Easy explanation: Hydrogen peroxide has BLEACHING properties and its bleaching action is due to oxidation by Atomic Oxygen. It is permanent, therefore the above statement that ’ Hydrogen peroxide does not have any bleaching property’ is considered to be false.

The correct option is (b) acidic

Easiest EXPLANATION: One of the most important chemical properties of hydrogen PEROXIDE i.e. H2O2 is that it is acidic in nature. It is weakly acidic in nature and PURE hydrogen peroxide TURNS blue Litmus red (an indication of acidic nature).

Correct option is (a) Water

The explanation: Hydrogen PEROXIDE, REPRESENTED by H2O2, is stored in acetanilide or sodium PYROPHOSPHATE, the PRESENCE of traces of alcohol, which slows down the rate of DECOMPOSITION of hydrogen peroxide (H2O2).

Correct choice is (c) both reducing and oxidizing agent

To explain: Hydrogen PEROXIDE, whose CHEMICAL FORMULA is given by H2O2, acts as an oxidizing agent as well as a reducing agent in both acidic and basic MEDIUM also. Hydrogen peroxide is an amphoteric substance.

Correct answer is (b) Volume STRENGTH = 11.2 Molarity

The EXPLANATION: The volume strength of HYDROGEN peroxide is 11.2 times of molarity, which is mathematically represented by X = 11.2 M; where X is the volume strength of hydrogen peroxide and M is the molarity.

Correct answer is (c) hydrogen BOND

For explanation: The DISSOLUTION of covalent COMPOUNDS like urea, glucose, and ETHANOL is due to the tendency of these MOLECULES to form a hydrogen bond with water. Urea’s dissolution as because of the hydrogen bond.

Correct answer is (B) higher

Explanation: WATER has a HIGH dielectric constant and that is 78.39. The interaction of water with ionic substances is effective along with the release of ENERGY in a noted QUANTITY because of the Ion dipole interaction. This is applicable to the intercations with polar substances also.

Right option is (c) H2O2

The explanation is: Hydrogen peroxide’s chemical formula is H2O2 and it was DISCOVERED by J.L. Thenard in 1818. It is an important COMPOUND used in the treatment of pollution control treatment of Industrial and DOMESTIC EFFLUENTS.

Right answer is (d) 4

Best explanation: Water has a maximum density at 4-degree centigrade, this is because at 4-degree centigrade, as opposite forces are in balance that is like the FORMATION of Ice and maintaining of the LIQUID phase of water. Any LESS than 4-degree centigrade or GREATER than 4-degree centigrade, the water density is lesser than that of 4-degree centigrade.

The CORRECT choice is (B) false

For explanation: As pure WATER is not a GOOD conductor, we add a LITTLE amount of an acid or alkali or salt in order to make it a good conductor. The above-given statement that pure water is a good conductor, is considered to be false.

The correct option is (c) both CATION exchange resins and ANION exchange resins

Best EXPLANATION: There are two types of synthetic resins USED for removal of permanent hardness. They are cation exchange resins which are big molecules containing sulfonic acid group and an anion exchange resins which are also big molecules containing amino acids.

The correct option is (a) boiling

To explain: The methods that are used for removing the temporary hardness of WATER are by boiling and by CLARK’s process. Adding WASHING SODA, caustic soda and SODIUM phosphates are for permanent hardness removal.

Right answer is (b) sp^3

Easiest EXPLANATION: Water has a hybridization of sp^3. In a water molecule oxygen has TWO LONE pairs and two bonded hydrogens. Its structure is V in SHAPE and has a bent structure. Water has a chemical formula of H2O.

Correct choice is (b) Permutit process

The explanation: Permutit is hydrated SODIUM aluminum SILICATE, it exchanges it’s sodium ions for DIVALENT ions of calcium and magnesium, permutit when fully exhausted can be REGENERATED by treating with 10% of sodium chloride solution. It is the most efficient method to GET water with zero degrees of hardness.

Correct answer is (b) true

For explanation: Yes, a number of COMPOUNDS such as calcium hydride(CAH), calcium phosphide(Ca3PO4), ETC can undergo hydrolysis with water. Therefore we can say that compounds can undergo hydrolysis with water.

The correct OPTION is (b) 5

To explain I would SAY: In hydrated salt, there are FIVE types of water. The five types of water in hydrated salt are i. coordinated water, ii. hydrogen bonded water, iii. lattice water, iv. CLATHRATE water and v. ZEOLITE water.

Right CHOICE is (b) metallic HYDRIDES

The best EXPLANATION: The metallic INTERSTITIAL hydrides’ composition varies with temperature and pressure, they are non-stoichiometric in nature and EXAMPLE for this is LaH2.76. These hydrides are formed when transition metals and rare Earth metals combine with hydrogen.

Right answer is (d) both metals and nonmetals

The explanation is: In redox reactions, water reacts with metals and nonmetals both. For example, take the reaction of sodium with water, the PRODUCTS are sodium HYDROXIDE and hydrogen, whereas FLUORINE reacts with water in order to form hydrogen CATION and fluorine anion with OXYGEN.