Q.1 |
Adam mixes 1800 kg of salt water which has a salt content of 10%. Several days later, the salt content is 15%. What is the weight of the salt water now? |
a) |
1500g |
b) | 1400g |
c) | 1000g |
d) | 1200g |
Q.2 |
A cubic shaped water tank of 20 inches tall is half filled with water. If a solid metal cylinder with a diameter of 10 inches and a height of 20 inches is placed in the tank. What is the water level? |
a) |
12.44 inches |
b) | 15 inches |
c) | 16.40 inches |
d) | 12.8 inches |
Q.3 |
Five bells first begin to toll together and then at intervals of 5, 10, 15, 20 and 25 seconds respectively. After what interval of time will they toll again together? |
a) |
6.5 minutes |
b) | 5.5 minutes |
c) | 5.2 minutes |
d) | 5 minutes |
Q.4 |
Percolation is the phenomenon of absorption of water by soil. Percolation rate of water is least in which of the following soil? |
a) |
Sandy soil |
b) | Clayey soil |
c) | Loamy soil |
d) | None of these |
Q.5 |
Choose the correct option:
|
a) |
Only 1 is correct |
b) | Only 2 is correct |
c) | Only 1 and 2 are correct |
d) | 1, 2 and 3 are correct |
Q.6 |
Choose the correct option:
|
a) |
Only 1 is correct |
b) | Only 2 is correct |
c) | Both 1 and 2 are correct |
d) | Both 1 and 2 are incorrect |
Q.7 |
Which of the following is not a chemical change? |
a) |
Burning of fuels |
b) | Rusting of iron |
c) | Drying of clothes |
d) | Formation of curd from milk |
Q.8 |
A half circle overlaps with a square. The diameter of the half circle is 12 inches. What is the area of the hatched/striped parts? |
a) |
25 cm² |
b) | 20 cm² |
c) | 16 cm² |
d) | 36 cm² |
Q.9 |
A train is 240 m long. The train travels at 20 m per second. It takes 60 seconds for the train to pass the tunnel. How long is the tunnel? |
a) |
900 m |
b) | 960 m |
c) | 800 m |
d) | 860 m |
Q.10 |
Complete the following sentence: The solutions which do not change the colour of either red or blue litmus are known as __________. |
a) |
acidic solutions |
b) | base solutions |
c) | neutral solutions |
d) | indicator |
Your Score: 0/10
Sample PDF of Unified Council - National Level Science Talent Search Examination (NSTSE) PDF Sample Papers for Class 7:
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Answers to Sample Questions from Olympiad Success:
Q.1 : d | Q.2 : a | Q.3 : d | Q.4 : b | Q.5 : d | Q.6 : c | Q.7 : c | Q.8 : d | Q.9 : b | Q.10 : c