Which of the following species determines the chemical properties of an atom?

The following glasswares are used to measure the volume of liquids except

Pauli exclusion principle is related to

The species with no electron in the 3d-orbital is

The separation of oxygen from nitrogen by fractional distillation of air is possible because

The purity of a solid sample can best be determined by its

The mass of one mole of (NH₄)₂CO₃ is [ O= 16.0 , N=14.0, C= 12.O, H= 1.0]

Atomic orbital is

The property of elements which increases down a group of the Periodic Table is

The reason for the decrease in the atomic size of elements across a period is that

The oxidation number of nitrogen in Pb(NO₃)₂ is

Which of the following arrangements indicates the correct decreasing order of ionization energy of period 3 elements?

Which of the following metals has the strongest metallic bond?

Which of the following substances does not have van der Waals' forces?

The oxidation number of X in XO₄³⁻ is

The ionization energy is affected by the following factors except

Which of the following statements is correct?

The bond angle in tetrahedral molecules such as tetrachloromethane is

The properties of a good primary standard include the following except

The use of diamond in abrasives is due to its

Which of the following statements about endothermic reaction is correct?

A 0.1moldm¯³ solution of sodium hydroxide was diluted with distilled water to 0.001 moldm¯³. What is the dilution factor?

Graphite and diamond are similar in that they

In a saturated solution at a given temperature, the undissolved solutes are in equilibrium with

The number of atoms present in 2.5 moles of a triatomic gas is equivalent to [1 mole= 6.02 x 10²³]

When magnesium reacts with oxygen, heat is

Which of the following gases is not acidic?

A hydrocarbon contained 14.3% hydrogen. The empirical formula of the hydrocarbon would be [C=12, H=1].

Which of the following statements is not a chemical property of an acid?

Halogens generally react with metals to form

Potassium chloride solid does not conduct electricity because

When water was added to a white anhydrous substances X, the colour changed to blue, X is

Solubility curve can be applied in the determination of the

If 0.2 g of a salt is required to saturate 200cm³ of water at room temperature. What is the solubility of the salt?

The property of a chemical reaction that is affected by a catalyst is the

Soluble salts can be prepared by the following methods except

Chemical reaction occurs when the colliding reactants have energy that is

The common features of reactions at the anode is that

Consider the following reaction equation: 2NO(g) + O₂(g) → 2NO₂(g)

What is the change in the oxidation number of nitrogen?

Which of the following factors characterize members of the same homologous series?

Calculate the mass of copper deposited if a current of 0.45 ampere flows through CuSO₄ solution for 1 hour 15 minutes.[Cu= 64.0 , S=32.0, O=16.0]

Classification of alkanols is based on the

The name of the compound C₄H₉COOC₃H₇ is

Which of the following pairs of gases are pollutants from car exhaust?

Fats and oils can be obtained from any of the following sources except

The condensation of two units of glucose will produce a disaccharide with the formula which is

The IUPAC name for the compound ClCH₂CH₂OH is

The real harmful effect of the release of chlorofluorocarbon into the atmosphere is that it eventually causes

A primary alkanol has a molecular mass of 60. What is the structural formula of the compound?

Petroleum is a non-renewable source of energy because it