SilverZone - IOS PDF Sample Papers for Class 7
Class 7 sample paper & practice questions for International Olympiad of Science (IOS) level 1 are given below. Syllabus for level 1 is also mentioned for these exams. You can refer these sample paper & quiz for preparing for the exam.
Q.1 |
Choose the correct option and complete the following sentence: The wire which melts and breaks the circuit when a large current is allowed to flow through it is called _______. |
| a) |
fuse wire |
| b) | electric wire |
| c) | filament |
| d) | connecting wire |
Q.2 |
Choose the correct option and complete the following sentence: The tiny pores in the leaves of the plants used for the exchange of gases are ____________. |
| a) |
stomata |
| b) | tracheae |
| c) | chloroplast |
| d) | spiracles |
Q.3 |
Bryophyllum can reproduce by its ___________. |
| a) |
Stem |
| b) | flower |
| c) | Leaves |
| d) | Roots |
Q.4 |
Which of the following substance break down when we inhale oxygen during respiration? |
| a) |
Glucose |
| b) | Protein |
| c) | Fatty acid |
| d) | Hemoglobin |
Q.5 |
Complete the following equation:- 2 Mg (s) + O2 (g)→ |
| a) |
2 Mg(s) |
| b) | 2 MgO (s) |
| c) | 2 MgO (l) |
| d) | MgO(s) |
Q.6 |
Dia was performing an experiment which includes the following steps: Step 1: Two drops of sulphuric acid were added to 1 g of copper sulphate powder and then a small amount of hot water was added to dissolve it. Step 2: On cooling, beautifully blue coloured crystals got separated. Identify the changes that took place in step 1 and step 2. |
| a) |
Step 1 - Physical change, Step - 2 Chemical change |
| b) | Step 1 - Chemical change, Step - 2 Chemical change |
| c) | Step 1 - Physical change, Step - 2 Physical change |
| d) | Step 1 - Chemical change, Step - 2 Physical change |
Q.7 |
Which of the following distance-time graph shows a truck which is moving with constant speed?  |
| a) |
a |
| b) | b |
| c) | c |
| d) | d |
Q.8 |
Find the missing character among the given alternatives:  |
| a) |
12 |
| b) | 13 |
| c) | 11 |
| d) | 10 |
Q.9 |
A sea breeze is caused due to __________. |
| a) |
convection |
| b) | conduction |
| c) | radiation |
| d) | All of these |
Q.10 |
The effect of the sting of an ant can be neutralized by rubbing with ________. |
| a) |
Sodium carbonate |
| b) | Calcium chloride |
| c) | Calcium carbonate |
| d) | Sodium hydrogen carbonate |
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Answers to Sample Questions from Olympiad Success:
Q.1 : a | Q.2 : a | Q.3 : c | Q.4 : a | Q.5 : b | Q.6 : c | Q.7 : c | Q.8 : c | Q.9 : a | Q.10 : d
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