HSSC Laboratory Asst. / Dt.-01-01-2023 Morning Shift (Cat. No. 11,12,13,14,15)

Total Questions: 100

21. Insert the missing number -

Correct Answer: (b) 39

22. Which two signs need to be interchanged to make the following equation correct?

9 × 98 ÷ 14 + 3 - 19 = 11

Correct Answer: (b) '+' and 'x'

23. In a certain code 'PURE' is written as 'QVQD' and 'COPE' is written as 'DPOD'. How is 'WHEN' written in the code?

Correct Answer: (c) XIDM

24. Two thirds of a number is 16 more than 40 percent of that number. What is the number?

Correct Answer: (b) 60

25. If D = 4, BAD = 7, then what is the value of ANT?

Correct Answer: (c) 35

26. A man starts from a point and walks 2 km towards north. He turns right and walks 3 km. Then he turns left and travels 2 km. The direction he is now facing is-

Correct Answer: (b) north

27. For a d-electron, the orbital angular momentum is-

Correct Answer: (a) √6 h/2π

28. The total number of electrons in a subshell designated by azimuthal quantum number l is given as-

Correct Answer: (b) l²

29. If the central atom in a molecule has two lone pairs and three bond pairs, the shape of the molecule could be-

Correct Answer: (a) T-shaped

30. A sample of gas expands from V₁ to V₂. The amount of work done by the gas is maximum when the expansion is-

Correct Answer: (c) isobaric