MCQ

CH11 - ATOMS AND RADIOACTIVITY

A radioactive nucleus contains 138 neutrons. The nucleus emits an \( \alpha \)-particle.How many neutrons are in the nucleus after it has emitted the ...

2009 Summer

MCQ

CH11 - ATOMS AND RADIOACTIVITY

The graph shows the decay curve for one particular radioactive nuclide. What is the half-life of this nuclide?

2009 Summer

MCQ

CH11 - ATOMS AND RADIOACTIVITY

$^{16}_{7}\text{N}$ is the symbol for a particular nuclide of nitrogen.How many nucleons does this nuclide contain?

2009 Summer

Theory

CH11 - ATOMS AND RADIOACTIVITY

The following table includes some of the properties of alpha, beta and gamma radiations.Complete the table by filling in the missing properties.[Table...

2009 Summer

MCQ

CH11 - ATOMS AND RADIOACTIVITY

Which statement explains the meaning of the half-life of a radioactive substance?

2009 Winter

MCQ

CH11 - ATOMS AND RADIOACTIVITY

The diagram shows the paths of three different types of radiation, X, Y and Z.Which row in the table correctly identifies X, Y and Z?

2009 Winter

MCQ

CH11 - ATOMS AND RADIOACTIVITY

How many neutrons and how many protons are contained in a nucleus of $^{238}_{92}\text{U}$? [Table_1]

2009 Winter

MCQ

CH11 - ATOMS AND RADIOACTIVITY

How many neutrons and how many protons are contained in a nucleus of $^{238}_{92} ext{U}$? [Table_1]

2009 Winter

MCQ

CH11 - ATOMS AND RADIOACTIVITY

Which statement explains the meaning of the half-life of a radioactive substance?

2009 Winter

MCQ

CH11 - ATOMS AND RADIOACTIVITY

The diagram shows the paths of three different types of radiation, X, Y and Z.Which row in the table correctly identifies X, Y and Z?

2009 Winter

MCQ

CH1 - MEASUREMENTS AND UNITS

A stopwatch is used to time a runner in a race. The diagrams show the stopwatch at the start and at the end of the race. How long did the runner take...

2017 Summer

MCQ

CH2 - FORCES AND MOTION

On Earth, a ball is dropped and falls 2.0 m in a vacuum. The acceleration of the ball at 1.0 m is $10 \text{ m/s}^2$. What is the acceleration of the...

2017 Summer

MCQ

CH2 - FORCES AND MOTION

The speed-time graph represents a motorcycle journey. In which part of the graph is the acceleration equal to zero? [Image_1: Speed-time graph with ...

2017 Summer

MCQ

CH3 - FORCES AND PRESSURE

Diagram 1 shows a sealed plastic bottle containing a hollow glass sphere and a steel ball.Diagram 2 shows the same bottle after it has been shaken.Dia...

2017 Summer

MCQ

CH2 - FORCES AND MOTION

A student is weighed on laboratory scales.Which row about weight and mass is correct?[Table_1]

2017 Summer

MCQ

CH1 - MEASUREMENTS AND UNITS

A measuring cylinder containing only water is placed on an electronic balance. A small, irregularly shaped stone is now completely immersed in the wat...

2017 Summer

MCQ

CH2 - FORCES AND MOTION

A boat is travelling at a steady speed in a straight line across the surface of a lake.Which statement about the boat is correct?

2017 Summer

MCQ

CH3 - FORCES AND PRESSURE

The diagram shows three uniform, solid wooden blocks with a square cross-sectional area resting on a horizontal table.Which list puts the blocks in or...

2017 Summer

MCQ

CH4 - FORCES AND ENERGY

Energy resources are used to generate electricity.Which resource is renewable and does not release carbon dioxide when being used to produce electrici...

2017 Summer

MCQ

CH2 - FORCES AND MOTION

A student does some simple exercises. In which exercise is the most work done?

2017 Summer