Section 1: Motion and Measurement of Distances, Light, Shadows and Reflections, Electricity and Circuits, Fun with Magnets, Our Environment, Sorting and Separation of Materials, Changes Around Us, Living Organisms and Their Surroundings, Food and its Components, Fibre to Fabric.
Achievers Section: Higher Order Thinking Questions - Syllabus as per Section 1
Spot the energy conversions that take place in a torch: 1. Chemical → electrical → light 2. Electrical → chemical → light 3. Electrical → heat → chemical 4. Light → chemical → electrical
Q.2
Separating mixtures is a scientific process in which two or more substances are separated which were once together. Separating mixtures is useful in many different ways. Identify the example of the way by which mixtures are separated to remove undesirable components:
Q.3
Consider the following statements and choose the correct option: Statement 1: When separating a mixture of saltwater (solution), filtration method is employed to obtain pure salt from the solution. Statement 2: Fractional distillation is employed to separate a mixture of iron filings and powdered sugar (sucrose).
Q.4
Which of the following method will Sarah use at home to separate husks, small stones and earthy materials from a bowl full of pulses?
Q.5
While measuring the length of a pencil, the reading of the scale at one end was 4.2 cm and at the other end was 16.5 cm. What is the length of the pencil?
Q.6
Which among the following pairs are not irreversible changes? 1. Dissolution 2. Rusted iron nails 3. Baking a potato 4. Freezing water
Q.7
Select the one from below that is different from the other three based on the types of motion: 1. Heart pumping blood 2. A racing car speeding on a race track 3. A rocking chair 4. Revolution of the moon around the earth
Q.8
Which of the following is/are NOT the characteristic feature(s) of the cotton ginning process?
Q.9
Following is a list of few objects. Classify them correctly under the headings shown in the figure below: 1. Clear glass 2. Cement 3. Butter paper 4. Air 5. Frosted glass 6. Bag
Q.10
Read the statements given below and select the correct option: Statement 1 - When the size of the foreign particle is too small to be picked by hand or when the quantity is too large, sieving is used for separating substances. Statement 2 - Separating bran from flour is done by sieving.
Your Score: 0/10
Answers to Sample Questions from CREST Olympiads:
Q.1
a
Q.2
a
Q.3
d
Q.4
b
Q.5
c
Q.6
c
Q.7
b
Q.8
d
Q.9
d
Q.10
c
Answers to Sample Questions from CREST Olympiads:
Q.1 : a | Q.2 : a | Q.3 : d | Q.4 : b | Q.5 : c | Q.6 : c | Q.7 : b | Q.8 : d | Q.9 : d | Q.10 : c
