Science Ifra

What is the SI unit for electric current?

0.7 decilitre is equal to ___mililitre

State the SI unit you would use to measure physical quantity of these objects:

Tablet, lamb, duration of sleep

• mililitre, gram, hours

• metre, kilogram, seconds

• centimetre, miligram, minutes

• centimetre, kilogram, hours

The weather today is 301 kelvin. How do you convert it to degree Celcius?

• 301 minus 273

• 301 add 273

• 301 divide 273

• 301 times 273

the smallest division of the reading of a vernier calipers is

• 0.01 cm

• 0.01 mm

• 0.1 cm

• 1 mm

The smallest division of the micrometer screw gauge's reading is

• 0.001 cm

• 0.001mm

• 0.01 cm

• 0.1 mm

When measuring weight of paper, the best way to know the wight of each piece is to

• weigh each piece on a digital weighing scale

• weigh 100 sheets and divide the weight with 100

• use water displacement method

• use graph paper method

When measuring weight of paper, the best way to know the wight of each piece is to

• weigh each piece on a digital weighing scale

• weigh 100 sheets and divide the weight with 100

• use water displacement method

• use graph paper method

The density of 4 materials are described here:

Gold 19.30 g/cm3

Water 1.00 g/cm3

Copper 8.92 g/cm3

Mercury 13.60 g/cm3

Ice 0.92 g/cm3

You have mixed all substances in a beaker. Which is the order from top to bottom?

• Ice, Water, Copper, Mercury, Gold

• Ice, Water, Gold, Mercury, Copper

• Water, Mercury, Ice, Copper, Gold

• Gold, Mercury, Coper, Water, Ice

Choose the best sequence in scientific method

• Identify problem and construct hypothesis

  Plan and conduct experiment

  Analyse and interpret data

  Conclude and report

• Plan and conduct experiment

  Identify problem and construct hypothesis

  Analyse and interpret data

  Conclude and report

• Analyse and interpret data

  Identify problem and construct hypothesis

  Plan and conduct experiment

  Conclude and report

• identify problem and construct hypothesis

  Analyse and interpret data

  Plan and conduct experiment

  Conclude and report