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