GRADE 09 ASSET

The density of water is 1 g/cc. Ice floats on water with 90% of its volume inside the water. What will be the mass of a cube of ice of side 3 cm?

• 27 g

• 24.3 g

• 30 g

• data is insufficient

Observe the pattern shown here:

1 = 1

1 + 3 = 4

1 + 3 + 5 = 9

1 + 3 + 5 + 7 = 16

Which of the following generalizes the pattern accurately?

• The sum of first 'n' natural numbers is n²

• The sum of first 'n' natural numbers is (2n - 1)²

• The sum of first 'n' odd natural numbers is (2n - 1)²

• The sum of first 'n' odd natural numbers is n²

Three square tiles can be used to form a right-angled triangle by placing them corner to corner as shown in the diagram. The areas of some square tiles given below. Which three tiles can be placed corner to corner, in the manner shown above, to form a right-angled triangle?

• It is possible to do it with any three tiles

• Tiles P, R and T

• Tiles S, R and T

• Tiles Q, R and S

It was observed that even when both the switches were open the bulb was shining. Which of these could be its complete circuit diagram?

• 
• 
• 
• 

Among the following which two circuits will have the same current, assuming all the bulbs to be identical, wires offer no resistance and circuits are properly connected

• P & Q

• P & S

• R & S

• r & Q

Tap P fills the tank while tap Q empties water from tank as shown below. The graph shows the amount of water flowing from both the taps during different intervals of time W, X , Y and Z. During which of the time intervals was the water level in the tank the LOWEST?

• W

• X

• Y

• Z