The by-product of fermentation of sugar is

Which of the following sugars is a product of the condensation of monosaccharides?

The cleaning effect of soap is low in acidic water because of

The following compounds are condensation polymers except

What amount of electricity is required to deposit one mole of aluminium from a solution of AlCl3?

Which of the following compounds would react rapidly with bromine?

Alkanols can be manufactured from alkenes by the initial reaction of alkenes with

Which of the following statements about the standard hydrogen electrode is not correct?

If 60g of M combines with 24g of oxygen, what would the empirical formula of the oxide be? [O = 16.0, M = 120]

The products of the electrolysis of dilute sodium chloride using carbon electrodes are

Determine the quantity of electricity used when a current of 0.20 amperes is passed through an electrolytic cell for 60 minutes

Oxochlorate (I) acid is used as a bleaching agent because it is

The IUPAC name for CH₃CHCH₃CH(Cl)CH(CH₃)CH₂CH₃ is

A colourless gas with a pungent smell is evolved when dilute hydrochloric acid is added to a sample of a salt. The gas colours moist litmus.

If 5.0g of marble reacts with 25.0 cm³ hydrochloric acid, which of the following combinations has the fastest reaction rate?

Increasing the temperature generally

A white precipitate was formed when BaCl₂(aq) was added to an aqueous solution of a salt X. The precipitate dissolved in dilute HCl with rapid effervescence. Salt X is likely to contain

Before a reaction could take place there should be

Consider the following reaction equation: CaO + SiO₂ → CaSiO₃. Silicon (IV) oxide is acting as

Which of the following acids would form normal salt only?

What is the partial pressure of oxygen at s.t.p. in a gaseous mixture containing 100 cm^3 of oxygen and 900 cm^3 of nitrogen gas?

Graphite is used as a dry lubricant due to the presence of

Which of the following gases is alkaline?

Which of the following statements about an equilibrium system is correct?

Consider the following reaction equation:

N₂(g) + 3H₂(g) ⇌ 2NH₃(g), ΔH = -ve.

Increasing the temperature of the reaction would increase

When air in a syringe is compressed such that there is no change in temperature, the

Which of the following statements about liquids is

A hydrogen chloride gas reacted with oxygen gas to yield water and chlorine gas. The mole ratio of the hydrogen chloride gas to water is

What number of moles of oxygen would exert a pressure of 10 atm at 320 K in an 8.2 dm³ cylinder? [R = 0.082 atm dm³ mol⁻¹ K⁻¹]

If 50 cm³ of a saturated solution KNO₃ at 40 °C contained 5.05 g of its salt, its solubility at the same temperature would be [KNO₃ = 101].

Which of the following elements would displace copper from a solution of copper ions?

What is the percentage composition of carbon in Ca(HCO₃)₂? [Ca = 40.0, O = 16.0, C = 12.0, H = 1.0]

Which of the following bond types is intermolecular?

The maximum number of covalent bonds formed by nitrogen is

The IUPAC name of the compound CH₃CH(CH₃)CHCH₂ is

Ionization energy increases across the period in the periodic table because

Which of the following properties indicate that an element is a metal. I. It reacts with oxygen to form an acidic oxide. II. Its ionic chlorides. III. has high melting point. IV. displaces hydrogen from dilute HCl?

The electron configuration of carbon atom in its excited state is

An oxide has the following properties: I. it is a white powder. II. reacts with HCl. III. reacts with NaOH. IV. is insoluble in water. The oxide is

Which of the following statements about atoms of a metal is correct? They

Which of the following sketches is the graphical representation of Boyle's law?

Electronegativity of elements in the periodic table normally

Consider the following table:

Which of the substances is a liquid at room temperature and rapidly evaporates on exposure to air?

Which of the following oxides is amphoteric?

Which of the following processes occur during fractional distillation of petroleum?

If the molar mass of X(HCO₃)₂ is 162 g mol⁻¹, determine the relative atomic mass of X. [H = 1.0; C = 12.0; O = 16.0]

Charcoal is used in the decolourization of sugar because of its

The first definition of an element was made by

Which of the following scientists formulated the law of conservation of mass?