JETS CLUB QUIZ

The nearest planet to the sun is the

• Pluto

• Earth

• Mars

• Mercury

The part of the earth's crust that is covered by ocean and sea is called

• Biosphere

• Ionosphere

• Stratosphere

• Hydrosphere

Which of the following is a chemical change?

• the rusting of iron

• dissolving salt in water

• melting an ice cube

• bending a copper wire

Which elements are(is) not balanced?

LiNO₃ + CaBr₂  -->  Ca(NO₃)₂ +  LiBr   

• Li

• Ca and Li

• O and N

• Ca

What is the relative molecular mass of Calcium trioxocarbonate (IV), CaCO₃ ?

[ Ca = 40; C = 12 ; O = 16 ]

• 85 g/mol

• 100 g/mol

• 58 g/mol

• 106 g/mol

An organic compound on analysis yielded 2.04g carbon, 0.34g hydrogen and 2.73g oxygen. determine its empirical formula.

• CHO

• CH₂O

• CH₃O

• CHO₃

If the current in an electrical circuit is constant, what will happen to the voltage if the resistance is increased?

• Voltage will increase

• Voltage will decrease

• Voltage will stay the same

Voltage or potential difference is the measure of the...

• workdone in moving 1 coulomb of charge from one point to another along a conductor

• amount of electric charge that flows through a circuit

• opposition to flow of charges along a conductor

• the total workdone in driving 1 Coulomb of charge round a closed circuit

Determine the total distance traveled during the first three seconds.

( speed in m/s, time in seconds)

• 10 m

• 30 m

• 45 m

• 90 m

Cynthia rode on his sleigh 16,000 m west, then 12,000 m south. What is the magnitude of his displacement in km?

• 5.3 km

• 28 km

• 20 km

• 45 km