Diamond cannot be used
- A. In making bicycle chains
- B. As abrasives
- C. In cutting glass and metals
- D. As dies for drawing wires
What volume of 0.5M H2SO4 will exactly neutralize 20cm3 of 0.1M NaOH Solution?
- A. 2.0cm 3
- B. 5.0cm 3
- C. 6.8cm 3
- D. 8.3cm 3
The metal whose ore can be concentrated by passing it through a magnetic separator is
- A. Zn
- B. Sn
- C. Cu
- D. Ca
Which of the following statements is correct about the periodic table?
- A. Elements in the same group have the same number of electron shells
- B. The non-metallic properties of the elements tend to decrease across each period
- C. Elements in the same period have the same number of valence electrons
- D. The valence electrons of the elements increase progressively across the period
Which of the following is not an alkali?
- A. Ca(OH)2
- B. NH3
- C. NaOH
- D. Al(OH)3
Alkanols have the general molecular formula
- A. CnH2n-2
- B. CnH2n+1CHO
- C. CnH2n-2OH
- D. CnH2n+1OH
The products formed when primary Alkanols are oxidized using acidified potassium tetraoxomanganate (VII) are what?
- A. CH3CH2CHO and H2O
- B. CH3CHO and CO2
- C. CH3CH2COOH and H2
- D. CH3COOH and CO2
Which of the following compounds is used as a gaseous fuel?
- A. CH3 -CH2 -CHO2 -COOH
- B. CH3 -C = CH
- C. CH3 -CH2 -CH2 -CH3
- D. CH2 -CH2 -CH3
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