Cast iron is used in making
- A. Chains and agricultural implements
- B. Iron sheets and retort stand
- C. Nails and iron rods
- D. Stoves and cookers
Which of the following properties is not peculiar to matter?
- A. Kinetic energy of particles increases from solid to gas
- B. Random motion of particles increases from gas to solid
- C. Orderliness of particles increases from gas to liquid
- D. Random motion of particles increases from liquid to gas
The pollutant that contributes to the depletion of the ozone layer is
- A. CFCs
- B. NO2
- C. SO2
- D. CO
The compound produced when sodium peroxide is heated with excess sodium is
- A. Na2CO3
- B. Na2O
- C. NaNO2
- D. NaOH
The radioisotope used in industrial radiography for the rapid checking of faults in welds and casting is
- A. Phosphorus-32
- B. Cobalt-60
- C. Carbon-14
- D. Iodine-131
What is the concentration of a solution containing 2g of NaOH in 100cm3 of solution?
[Na=23, O=16, H=1]
- A. 0.05 moldm-3
- B. 0.30 moldm-3
- C. 0.50 moldm-3
- D. 0.40 moldm-3
The process that requires the use of hardwater in its operation is
- A. Tanning
- B. Bottling
- C. Laundry
- D. Dyeing
Which of the following statements is true about 2-methylpropane and butane
- A. They have different number of carbon atoms
- B. They are members of same homologous series
- C. They have the same boiling points
- D. They have different chemical properties
The compounds CH3CH2CHO and CH3COCH3 can be distinguished from each other using
- A. Dilute ammonia
- B. Benedict's solution
- C. Tollen's reagent
- D. Sodium hydroxide solution
The colour of litmus in an alkaline medium is
- A. Red
- B. Yellow
- C. Pink
- D. Blue
The relative atomic mass of a naturally occurring lithium consisting of 90%\(\frac{7}{3}\)Li and 10%\(\frac{6}{3}\)Li is
- A. 6.2
- B. 6.8
- C. 7.1
- D. 6.9
The industrial preparation of hydrogen gas from water gas is referred to as
- A. Bosch process
- B. Contact process
- C. Haber process
- D. Bayer Process
The ability of carbon to form long chains is referred to as
- A. Alkylation
- B. Acylation
- C. Carbonation
- D. Catenation
Ammonium chloride can be separated from its mixture with common salt by
- A. Distillation
- B. Evaporation
- C. Decantation
- D. Sublimation
The principle of column chromatography is based on th ability of the constituents to
- A. React with the solvent in the column
- B. React with each other in the solvent in the column
- C. Dissolve in each other in the column
- D. Move at different speeds in the column
The monomer of nylon is
- A. Hydroxybenzene
- B. Hexanedioic acid
- C. Benzene -1,-4-dicarboxylic acid
- D. Ethane-1,2-diol
In the laboratory preparation of chlorine from concentrated hydrochloric acid in the presence of potassuim tetraoxomanganate(VII) the produced is dried by passing it through
- A. Concentrated tetraoxosulphate (VI) acid
- B. Anhydrous calcium chloride
- C. Calcium oxide
- D. Sodium hydroxide
The enzyme used in the hydrolysis of starch to dextrin and maltose is
- A. Zymase
- B. Sucrase
- C. Amylase
- D. Lactase
The condition required for corrosion to take place is the presence of
- A. Oxygen and Carbon (IV) oxide
- B. Water and Oxygen
- C. Water and Carbon (IV) oxide and Oxygen
- D. Water and Carbon (IV) oxide
In an electrochemical cell, polarization is caused by
- A. Oxygen
- B. Hydrogen
- C. Tetraoxosulphate(IV) acid
- D. Chlorine
An endothermic reaction is one during which heat is…..and can be represented by the symbol…. which of the following combinations can be used accurately to complete the above definition?
- A. liberated, -\(\Delta\)H
- B. liberated, +\(\Delta\)H
- C. absorbed, -\(\Delta\)H
- D. absorbed, +\(\Delta\)H
- E. absorbed, +\(\Delta\)G