The chemical formula of gypsum is:

 The symbol 'Na' represents the element:

The percentage of s-character in the hybrid orbitals of ethane, ethene, and ethyne follows the order:

 The catalyst used in the Haber process for ammonia synthesis is:

Which salt solution has pH greater than 7?

Which compound will exhibit geometrical isomerism?

The pH of 0.01 M CH₃COOH solution (Ka = 1.8 × 10⁻⁵) is approximately:

The compound that gives a positive Tollens' test but negative Fehling's test is:

The compound that will undergo the Cannizzaro reaction is:

The number of possible structural isomers for C₇H₁₆ is:

 Which of the following is a compound?

 The order of stability of the following carbocations is:
(I) (CH₃)₃C⁺
(II) CH₃-CH₂⁺
(III) (CH₃)₂CH⁺

Which of the following is a strong electrolyte?

The half-life of a first-order reaction is 10 minutes. The time taken for the concentration of the reactant to decrease from 1.0 M to 0.125 M is:

Which element shows the phenomenon of allotropy?

Which of the following is a homogeneous mixture?

Which quantum number determines the shape of an orbital?

The crystal field splitting energy (Δo) for an octahedral complex is:

 The mass of one mole of electrons is approximately:

What is the charge on a proton?

The IUPAC name of CH₃-CH₂-CH(CH₃)-CHO is:

In a chemical reaction, the substance that is completely consumed first is called the:

The IUPAC name for CH₃-CH₂-CHO is:

 The magnetic moment of [Fe(CN)₆]⁴⁻ is:

Which sub-shell has the lowest energy?

According to the Kinetic Molecular Theory, the pressure of a gas is due to:

The number of π-bonds in benzene is

The E° value for the standard hydrogen electrode is assigned a value of:

 Which hydrocarbon undergoes substitution reactions readily?

The process of a solid changing directly into a gas is called:

For a reaction, ΔG is negative. This means the reaction is:

The E° values for Fe³⁺/Fe²⁺ and I₂/I⁻ are +0.77 V and +0.54 V respectively. The feasibility of the reaction 2Fe³⁺ + 2I⁻ → 2Fe²⁺ + I₂ is:

The pH of a neutral solution at 25°C is:

The process by which a solid changes directly into vapor without passing through the liquid state is called:

In the reaction: Zn + 2HCl → ZnCl₂ + H₂, zinc acts as:

The bond angle in a water molecule is approximately:

Which subatomic particle is located in the nucleus of an atom?

The hybridization of carbon in ethyne (C₂H₂) is:

The reagent used to distinguish between aldehyde and ketone is:

The number of isomers possible for C₄H₈ (excluding stereoisomers) is:

The rate law for a reaction is found to be Rate = k [A]²[B]. If the concentration of A is doubled and B is halved, the rate of reaction will:

 The number of σ and π bonds in CH₂=CH-C≡N are:

Which quantum number defines the shape of an orbital?

Which halogen exists as a liquid at room temperature?

Which of the following has the highest boiling point?

The shape of a methane (CH₄) molecule is:

 In a face-centered cubic lattice, a unit cell is shared by how many unit cells?

The oxidation state of chromium in K₂Cr₂O₇ is:

The rate of a chemical reaction generally:

The atomic number of an element is defined as the number of:

The process used for the purification of copper is:

How many electrons can the first shell (K-shell) of an atom hold?

Which of the following is a noble gas?

For a reaction: 2A + B → Products, when concentration of B is doubled, the rate doubles. When concentration of A is doubled, the rate becomes four times. The rate law is:

 According to Boyle's law, at constant temperature:

The oxidation state of sulfur in H₂SO₄ is:

In the electrolysis of aqueous CuSO₄ using copper electrodes, the:

A substance that turns blue litmus paper red is:

The pH of a neutral solution at 25°C is:

In the electrochemical series, the standard electrode potential is measured relative to:

 A buffer solution is prepared by mixing:

The osmotic pressure of a 0.1 M solution of a non-electrolyte at 27°C (R=0.0821 L.atm/mol.K) is:

Which element has the highest electronegativity?

A solution with a pH of 3 is how many times more acidic than a solution with a pH of 5?

The vertical columns in the periodic table are called:

 Which alcohol gives iodoform test?

Which halogen is a liquid at room temperature?

The chemical formula for water is:

The number of isomers possible for C₄H₁₀O (alcohols) is:

The order of reactivity of halogens in halogenation of alkanes is:

The complex ion [CoF₆]³⁻ is paramagnetic. The hybridization of cobalt in this complex is:

 The density of a gas is 2.0 g/L at 1 atm pressure and 27°C. Its molecular mass is:

In a face-centered cubic (FCC) crystal lattice, the number of atoms per unit cell is:

What is the atomic number of an element with 12 protons and 12 neutrons?

The correct order of reactivity towards nucleophilic substitution reaction for the following is:
(I) CH₃-CH₂-Cl
(II) (CH₃)₂CH-Cl
(III) CH₃-CH₂-Br

The reaction CH₃COOH + C₂H₅OH ⇌ CH₃COOC₂H₅ + H₂O is an example of:

The number of moles in 44 grams of CO₂ (C=12, O=16) is:

In the electrolysis of molten NaCl, the product at the cathode is:

Which state of matter has a definite volume but no definite shape?

The boiling point of water at 700 mmHg pressure is:

Which of the following has the highest boiling point?

The standard enthalpy of formation (ΔH°f) for which of the following substances is zero?

The general formula for alkanes is:

According to Le Chatelier's Principle, if the temperature is increased for an exothermic reaction at equilibrium, the equilibrium will shift:

The catalyst used in the Contact Process for sulfuric acid manufacture is:

A covalent bond is formed by the:

The process used to convert vegetable oils into fats is:

The mass of 2.24 L of CO₂ gas at STP is:

The shape of a water molecule is:

The half-life of a first-order reaction is 10 minutes. The time required for the concentration to decrease from 0.1 M to 0.025 M is:

In the decomposition of KClO₃ to KCl and O₂, 0.1 moles of KClO₃ produces how many grams of O₂? (O=16)

The number of atoms in 4.2 g of nitrogen gas (N₂) is:

The crystal structure of NaCl is:

Which complex shows optical isomerism?

The unit of molarity is:

The rate constant of a reaction is 2.3 × 10⁻⁵ L mol⁻¹ s⁻¹. The order of reaction is:

The SI unit of pressure is:

Which of the following is an example of a covalent network solid?

The Haber process is used for the industrial production of:

A compound contains 40% carbon, 6.7% hydrogen, and 53.3% oxygen. Its empirical formula is: