Class 7 Mathematics Chapter 4 Simple Equations Quiz 10 (25 MCQs)

Quiz Instructions

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1. The product of a number and 6 is 30. Write the equation to represent this situation.
2. Which number should go in the blank? ..... H$_{2}$ + O$_{2}$ $\rightarrow$ 2 H$_{2}$O
3. This chemical formula is named what?CO2
4. Write the following statement in the form of an equation:One third of a number plus 2 is 3
5. Identify if this equation has one solution, infinitely many solutions or no solution.-3x+1=x+9-4x
6. The solution of the equation $\frac{n}{3}$
7. $\frac{3}{2}=\frac{9}{10}k$
8. The solution of the equation 7n + 5 = 12 is
9. What is the common name for the following chemical formula? Fe2O3
10. 2NaCl + CaO $\rightarrow$> ..... Na$_{2}$ + CaCl$_{2}$
11. 18x-(8x 7) = 67
12. $a-9=16$
13. 16x = 32
14. 28 =-1/
15. $32-7-d=20$
16. 3(x-1)+7=11
17. Find the y-value using substitution.x + 2y = 2x =-4y + 2
18. Solve for p in the following equation:4p = 16.
19. X-65 = 49
20. The sum of number x and 4 is 9
21. Last season, I spent $ 2752 to see my team play 43 games. To see each game, I had to buy a ticket and pay $ 10 for parking. How much was each ticket?
22. 2 p = 2 7/10
23. 3n + 7 = 25. Value of n is .....
24. How many HCl molecules do you need to balance this equation? Mg + ..... HCl $\rightarrow$ MgCl$_{2}$ + H$_{2}$
25. Find the value of y. 2y/3 + 8 = 4