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The application of law of thermodynamics to the enthalpy change was done by

Correct Answer: 2

Bleaching powders chemical name is

Correct Answer: 2

The ratio of the water molecule in plaster of paris and gypsum is

Correct Answer: 3

Baking powder is

Correct Answer: 2

Gastric juice contains HCl which is one example of

Correct Answer: 1

When milk of magnesia reacts with acetic acid it produces

Correct Answer: 3

Brine is used for industrial production of

Correct Answer: 1

When base reacts with the non-metal oxide

Correct Answer: 1

The acid used for the manufacture of fertilizers and explosives is

Correct Answer: 1

Could BF3 acidity be clarified using one of the following concepts?

Correct Answer: 3

What will be the value of pH of 0.01 mol dm-3 CH3COOH (Ka = 1.74 x 10-5)?

Correct Answer: 1

Which of the following options will be correct for the stage of half completion of the reaction A ? B?

Correct Answer: 1

What should be the correct order of the gas, acetone and ether vapour concentration at 30?. Considering that water has a maximum boiling point among these compounds, and that ether has a minimum boiling point?

Correct Answer: 2

What is the pH of the resulting solution when equal volumes of 0.1M NaOH and 0.01M HCl are mixed?

Correct Answer: 3

Which one of the following species cannot act as both Bronsted acid and base?

Correct Answer: 4

Which of the following salts will give the highest pH in the water?

Correct Answer: 3

The aqueous solution of NH4Cl is

Correct Answer: 2

For acidic solution

Correct Answer: 2

The oxidation number of Cr in K2CrO4 is

Correct Answer: 1

Which one will have maximum numbers of water molecules?

Correct Answer: 4

The number of atoms present in 0.1 moles of a triatomic gas is

Correct Answer: 1

Find the volume of O2 required to burn 1 L of propane completely, measured at 0? temperature and 1 atm pressure

Correct Answer: 4

A gas X has Cp and Cv ratio as 1.4, at NTP 11.2 L of gas X will contain_______ number of atoms

Correct Answer: 4

Which of the species is not paramagnetic?

Correct Answer: 2

Pressure has the same dimension as

Correct Answer: 1

There are two chlorides of sulphur S2Cl2 and SCl2. What is the equivalent mass of S in SCl2

Correct Answer: 3

A container has an equal mass of H2, O2 and CH4 at 27?, the ratio of their volume is

Correct Answer: 3

Boron exists as two stable isotopes; 10B(19%) and 11B(81%). Find out the average atomic weight of boron in the periodic table

Correct Answer: 4

How many orbitals can have the following set of quantum numbers, n = 3, l = 1, m1 = 0 ?

Correct Answer: 2

Electronic configuration of the outer shell of the element Gd with atomic number 64 is

Correct Answer: 4

Maximum number of electrons in a subshell can be

Correct Answer: 1

The orientation of atomic orbitals depends on their

Correct Answer: 2

A gas X has Cp and Cv ratio as 1.4, at NTP 11.2 L of gas X will contain_______ number of atoms

Correct Answer: 4

Number of unpaired electrons in N2+

Correct Answer: 2

The excitation energy of a hydrogen atom from its ground state to its third excited state is

Correct Answer: 1

3p orbital has _____ radial nodes

Correct Answer: 3

A 0.66 kg ball is moving with a speed of 100 m/s. Find its wavelength

Correct Answer: 4

Find the successive elements of the periodic table with ionisation energies, 2372, 520 and 890 kJ per mol respectively

Correct Answer: 4

In the modern periodic table, the number of period of the element is the same as

Correct Answer: 1

For the same value of n, the penetration power of orbital follows the order

Correct Answer: 3

Two different beakers contain M1-O-H, and M2-O-H solutions separately. Find the nature of the two solutions if the electronegativity of M1 = 3.4, M2 = 1.2, O = 3.5, H = 2.1

Correct Answer: 4

Which one is the most acidic among these?

Correct Answer: 3

Which of the compounds can exist together?

Correct Answer: 4

One mole of ferrous oxalate requires____ moles of MnO4? to get oxidised completely in an acidic medium

Correct Answer: 2

H2SO4 acts as a strong oxidising agent. In which of the reaction, is it not acting as an oxidising agent?

Correct Answer: 2

During a reaction of oxalic acid, potassium chlorate and sulphuric acid, the oxidation number of which of the element undergoes a maximum change

Correct Answer: 4

Find the redox reaction

Correct Answer: 3

In which of the following complex, the oxidation number of Fe is +1?

Correct Answer: 2

Which among the following compounds is the most reducing compound?

Correct Answer: 1

Which among the following is the strongest oxidising agent?

Correct Answer: 2

What type of bond is formed between the hydrogen atom of one water molecule and the oxygen atom of another water molecule?

Correct Answer: 1

In the Haber process for ammonia synthesis, what is the main purpose of the iron catalyst?

Correct Answer: 3

Which of the following is the strongest acid in aqueous solution?

Correct Answer: 3

What is the principal product of the reaction between an alcohol and a carboxylic acid in the presence of an acid catalyst?

Correct Answer: 1

Which type of intermolecular forces is primarily responsible for the high boiling point of water?

Correct Answer: 3