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 process that can be used to separate each of the following: 1. Cashews from mixture of almonds and cashewnuts 2. Sugar crystals from a mixture of red lentils 3. Small stones from a mixture of pulses. 4. Cut and cubed apples from a bowl of fruit salad.
Q.2
Three students gave the following statements during a classroom discussion. This is what they said: David: The motion of a vibrating tuning fork exhibits periodic motion. Nora: The blades of the fan is said to move in a rotatory motion. James: The length of the footsteps is the same for different people. Which student(s) made incorrect statement(s)?
Q.3
State the reason why glass windows appear hazy if not wiped off properly:
Q.4
State whether the following statements are true or false: 1. Fog appearing on a cold winter morning is due to condensation.
2. Evaporation takes place from all open surfaces of water bodies so water vapour gets continuously added to the air.
3. A glass containing ice has water droplets around it. We can conclude that the glass of ice is not so strong hence water goes through the glass and settles outside.
Q.5
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.6
Milk turns sour when kept outside for a long time. What kind of change does it depict?
Q.7
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.8
In the following question, an assertion and a reason are given. Choose the correct option: Assertion: Primary cells can be recharged but secondary cells cannot be recharged. Reason: Chemical reactions involved in primary cells are irreversible and in secondary cells, they are reversible.
Q.9
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.10
Given below are pictures of some objects. Identify the similarity between them:
Your Score: 0/10
Answers to Sample Questions from CREST Olympiads:
Q.1
b
Q.2
c
Q.3
b
Q.4
b
Q.5
a
Q.6
a
Q.7
a
Q.8
d
Q.9
d
Q.10
a
Answers to Sample Questions from CREST Olympiads:
Q.1 : b | Q.2 : c | Q.3 : b | Q.4 : b | Q.5 : a | Q.6 : a | Q.7 : a | Q.8 : d | Q.9 : d | Q.10 : a
