Most Repeated GK MCQs from Past Papers MCQs with Answers & Explanations (Page 119)

Explanation To solve the equation, we need to simplify both sides of the equation by expanding and combining like terms. Then, we can isolate the variable . 1. Expand the expressions on both sides of the equation: 3x + 12 - 2 = 4x - 6 + 5 3x + 10 = 4x -1 2. Move all terms involving to one side of the equation: 3x - 4x = -1 -10 -x = -11 3. Solve by dividing both sides by -1: x = -11/-1 x = 11

Explanation To find the solution set for the inequality, we need to isolate by solving the inequality step by step. 1. Subtract 5 from both sides to isolate the term with : 4x + 5 - 5 < 9 - 5 4x < 4 2. Divide by 4 to solve for : x < 4/4 x< 1 Therefore, the solution set for the inequality is. This means that any value of less than 1 will satisfy the given inequality.

Explanation

Explanation To find the range of a data set, we need to determine the difference between the maximum and minimum values in the set. Given data set of student ages: 16, 17, 18, 16, 19, 20 1. The minimum age in the data set is 16. 2. The maximum age in the data set is 20. 3. To calculate the range, we subtract the minimum age from the maximum age: Range = 20 = 16 = 4

Explanation The fruit seller initially had 35 mangoes. He sells 12 mangoes to one customer and 8 mangoes to another customer. To find out how many mangoes he has left, we subtract the total number of mangoes sold from the initial number of mangoes. Total mangoes sold: 12 + 8 = 20 Number of mangoes the seller has left: 35 - 20 = 15

Explanation A confidence level of 95% corresponds to a significance level of 0.05. The significance level, often denoted by alpha (α), is the probability of rejecting the null hypothesis when it is true. It is the complement of the confidence level . Therefore, if the confidence level is 95%, the significance level would be 1- 0.95 = 0.05

Explanation the adjacent angle to the 120-degree angle can be calculated as follows: 180 degrees - 120 degrees = 60 degrees

Explanation Let's denote the unknown n umber as 𝑥 According to the problem, the number is first multiplied by 7 and the n divided by 4, resulting in 14. This can be expressed as the equation: 7x/4 - 14 To solve for 𝑥 follow these steps: Multiply both sides of the equation by 4 to eliminate the fraction: 7x = 14 x 4 7x = 56 2. Divide both sides by 7 to solve for x: x = 56/7 x = 8 therefore, the number is 8

Explanation She was envious of her sister's beauty. اسے اپنی بہن کی خوبصورتی پر رشک آتا تھا۔ the preposition "of" is used because it introduces the object of envy.

Explanation

Explanation To find the value of x in the equation ( 3x + 7 = 22 ), we need to isolate ( x ). Here are the steps: 1. Subtract 7 from both sides of the equation to get rid of the constant term on the left side: [ 3x + 7 - 7 = 22 - 7 ] [ 3x = 15 ] 2. Divide both sides by 3 to solve for ( x ): [ frac{3x}{3} = frac{15}{3} ] [ x = 5] So, the value of ( x ) is ( 5).

Explanation In the story " Hitchhiking Across the Sahara, " the town of Ghardara is famous for its flies. This detail highlights the challenging and unique conditions encountered in the regio n.

Explanation The numbers between 20 and 30 are: 21, 22, 23, 24, 25, 26, 27, 28, 29. Let's check each number to see if it is prime: - 21 is not prime ( divisible by 3 and 7 ). - 22 is not prime ( divisible by 2 and 11 ). - 23 is prime (not divisible by any number other than 1 and 23 ). - 24 is not prime (di visible by 2, 3, 4, 6, 8, and 12 ). - 25 is not prime ( divisible by 5 ). - 26 is not prime ( divisible by 2 and 13 ). - 27 is not prime ( divisible by 3 and 9 ). - 28 is not prime ( divisible by 2, 4, 7, and 14 ). - 29 is prime (not divisible by any number other than 1 and 29 ). The prime numbers between 20 and 30 are 23 and 29. Now, we sum these prime numbers: 23 + 29 = 52

Explanation In "Goodbye, Mr. Chips" by James Hilton , Chips saw the great exhibition as a toddling child wobbling.

Explanation The reason Louis Pasteur forgot his marriage ceremony was that he was engrossed in his work. Pasteur was known for his dedication to scientific r esearch and experimentation Often becoming deeply involved in his work to the point of losing track of other aspects of his life.

Explanation T.S. Eliot's portrayal of modern man as a " Hollow Man " in his poem "The Hollow Men" suggests a profound sense of emotional emptiness and spiritual desolation The idea of being " feeling less" can be interpreted

Explanation The theme of the poem " Ozymandias " by Percy Bysshe Shelley Revolves around the idea of the transience of human achievements and the inevitable decline of power and empires. The most f itting theme from your options would be "Death levels everything."

Explanation The theme of the poem " Ozymandias " by Percy Bysshe Shelley Revolves around the idea of the transience of human achievements and the inevitable decline of power and empires. The most fitting theme from your options would be "Death levels everything."

Explanation T he most important condition for the appearance o f life is water. Water is crucial for life for several reasons. Solvent Properties: It dissolves various molecules, allowing for the chemical reactions necessary for life. Chemical Reactions : It involves many biochemical processes, including metabolism and energy production. Stability and Environment: It provides a stable environment for complex organic molecules to form and interact. Life can exist without oxygen, as evidenced by anaerobic organisms that thrive in oxygen-free environments. However, no known life form can exist without water.

Explanation " the word that fits best is " Splendid ." So, the correct completion would be: " Brookfield became splendid sometimes." This indicates that Brookfield occasionally achieved a state of grandeur or excellence.