**Best Questions:**Science

Challenge rules:
choose only one answer in each of the

**20 questions**. If you are sure about all your answers, tap See results at the bottom.1

What is a migraine?

Headache

Dessert of meringue

Afternoon rain

Long distance train

Scroll to see the next questions

2

What smell does hydrogen sulfide have?

Rose

Rotten eggs

Milk

Ozone

3

What is the chemical symbol for hydrogen?

He

Hg

Hd

H

4

Choose the integer that makes the following sentence true: …. × (-5)=15

3

-3

5

-5

5

6x5+3=

48

42

33

32

6

20 - x = 18. What is x?

2

3

5

6

7

Which number is divisible by 5?

45879

258965

245698

147253

8

Simplify 24/30.

1/8

4/5

3/4

2/7

9

Find the wrong word in a row: computer, screen, mouse, diary.

Screen

Computer

Diary

Mouse

10

Some months have thirty days, some have thirty-one day. How many months have twenty-eight days?

February

January

October and February

all months

11

Spell two antonymic words which anagram is CUBED RESULT.

CRUEL, SUTLE

RESCUE, BULLET

CRUDE, SUBTLE

CRUEL, BULLETS

12

8 ÷ 2 x 4=

14

1

16

10

13

Convert 1984 to Roman Numerals.

MCMLXXXIV

MCMLXXV

MCMXIIV

MMLXXXV

14

30+x=53. Find x.

33

73

23

11

15

What does a common fraction consist of?

Minuend and subtrahend

Term and the sum

Numerator and denominator

Dividend and divisor

16

Find the intruder: silver, gold, ivory, platinum.

silver

gold

ivory

platinum

17

Continue the sequence: 4, 6, 10, 14, 22, 26, ?

23

54

34

42

18

If the marked price of a rare car is $200000 and a discount of 5% is given on it, the sell price of this car is ...

120000

190000

230000

250000

19

How many people commit suicide every year?

500000

600000

700000

800000

20

The art club had an election to select a president. 10% of the 90 members of the club voted in the election. How many members voted?

9

10

20

25

STOP CHALLENGE

SEE RESULTS