Senior Category | Dubai Stem Olympiad 2021 | Qualifying Round
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- 1.
What happens to cause an electron moves up an energy level in an atom?
- A.
The electron emits a photon with energy equal to the difference between the two energy levels
- B.
The electron emits a photon with any energy value
- C.
The electron absorbs a photon with energy equal to the difference between the two energy levels
- D.
The electron absorbs a photon with any energy value
Correct Answer
C. The electron absorbs a photon with energy equal to the difference between the two energy levels -
- 2.
What type of electromagnetic waves are used for CT (Computerized Tomography) Scans?
- A.
X-ray
- B.
Gamma Rays
- C.
Microwaves
- D.
Radio Waves
Correct Answer
A. X-ray -
- 3.
What is 1652- 652
- A.
23375
- B.
23120
- C.
24567
- D.
23000
Correct Answer
D. 23000 -
- 4.
What is the relation between Machine Learning and Artificial Intelligence?
- A.
Artificial Intelligence is a subset of Machine Learning.
- B.
Machine Learning is a subset of Artificial Intelligence.
- C.
They are not related in any way whatsoever.
- D.
They are both the same
Correct Answer
B. Machine Learning is a subset of Artificial Intelligence. -
- 5.
In a flowchart, what symbol is used to denote a "decision"?
- A.
Rectangle
- B.
Parallelogram
- C.
Rhombus
- D.
Rounded Rectangle
Correct Answer
C. Rhombus -
- 6.
What is the formula for area of an equilateral triangle using only the side length (s) as a term?
- A.
(√3/2) x s2
- B.
(√3/4) x s2
- C.
(√3/5) x s2
- D.
(√3/3) x s2
Correct Answer
B. (√3/4) x s2 -
- 7.
If there are 2X bytes in a megabyte, what is the value of X?
- A.
10
- B.
30
- C.
5
- D.
20
Correct Answer
D. 20 -
- 8.
What is the mechanical advantage when a person lifts a load of 300N but only uses 100N of effort
- A.
-3
- B.
2
- C.
3
- D.
4
Correct Answer
C. 3 -
- 9.
What type of motion does a piston carry out?
- A.
Oscillating
- B.
Rotary
- C.
Linear
- D.
Reciprocating
Correct Answer
D. Reciprocating -
- 10.
The following box of mass 3kg is being pulled towards the right at a constant speed by a force of 200N. If air resistance is negligible, what is the magnitude of the frictional force?
- A.
200N
- B.
0N
- C.
600N
- D.
There is not enough information to tell.
Correct Answer
A. 200N -
- 11.
What is the term used to remove unnecessary information from a complex problem to get a simpler problem?
- A.
Abstraction
- B.
Critical thinking
- C.
Decomposition
- D.
None of the above
Correct Answer
A. Abstraction -
- 12.
What is the measure of the smaller angle between the hands of a clock showing 11:30?
- A.
175
- B.
165
- C.
195
- D.
185
Correct Answer
B. 165 -
- 13.
David has for some reason decided to write 3000 consecutive integers. The sum of all these integers is 3000. What is the product of all 3000 integers?
- A.
23000
- B.
198
- C.
0
- D.
-256
Correct Answer
C. 0 -
- 14.
What Input or Output device can be used to record compressions and rarefactions of air?
- A.
Oscilloscope
- B.
Printer
- C.
Microphone
- D.
Spring
Correct Answer
C. Microphone -
- 15.
What is the correct option to print the number 2 in pseudocode?
- A.
OUTPUT((2 ** 67)/(2 ** 66))
- B.
OUTPUT((2 ** 64)/(2 ** 60))
- C.
OUTPUT((2 ** 62)/(2 ** 66))
- D.
OUTPUT((2 ** 67)/(2 ** 69))
Correct Answer
A. OUTPUT((2 ** 67)/(2 ** 66)) -
- 16.
What is the nth term of this sequence 40, 43, 46, 49?
- A.
3n + 37
- B.
3n + 36
- C.
3n + 35
- D.
3n + 40
Correct Answer
A. 3n + 37 -
- 17.
What is the term for an artificial intelligence that can carry out a wide range of tasks extremely successfully and is much more complex and powerful than any AI on the market today?
- A.
Autonomous drones
- B.
Artificial General Intelligence
- C.
Chat bot
- D.
None of the above
Correct Answer
B. Artificial General Intelligence -
- 18.
The average height of 40 plants in a garden is 17cm. There are 20 roses, 15 daffodils, 5 lilies. If the average height of the roses is 15cm and the average height of the daffodils is 16cm, what is the average height of the lilies.
- A.
28
- B.
26
- C.
29
- D.
30
Correct Answer
A. 28 -
- 19.
What is the full form of RAM?
- A.
Random Access memory
- B.
Radiative Affective Memory
- C.
Repeated Active memory
- D.
None of the above
Correct Answer
A. Random Access memory -
- 20.
A=0 n=0 REPEAT: INPUT i A=A+i n=n+1 UNTIL n=50 OUTPUT A What does the above piece of code do?
- A.
Adds 50 input numbers and prints it
- B.
Prints all numbers from 0 to 50
- C.
Calculates the average of 50 numbers
- D.
It returns an error
Correct Answer
A. Adds 50 input numbers and prints it -
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Mar 27, 2021Quiz Edited by
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Dec 22, 2019Quiz Created by
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