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Accounting Finance and Punjab Sales Tax on Services QUESTION #2576
Question 1
Under section 9(1), when a service is provided over a period of time with periodic payments, how is the service treated for tax purposes?
  • As a single service taxable at the date of first payment
  • As comprising two or more separate and distinct services, each corresponding to the part of the service to which each separate payment relatesโœ”๏ธ
  • The entire service is taxable when the contract is signed
  • Tax is chargeable only upon final completion of the service
Correct Answer Logic:
Section 9(1) treats periodically paid services as COMPRISING TWO OR MORE SEPARATE AND DISTINCT SERVICES, each corresponding to the part to which each separate payment relates. However, section 9(2) clarifies this does NOT apply to services paid on installment basis.
Uploaded by: Fani Warraich
Correct Answer Logic:
Dissolved oxygen (DO) levels depend on temperature โ€” colder water can hold more dissolved oxygen. In cold water, DO can reach up to 14 ppm. Normal clean river water has DO around 8โ€“10 ppm. A DO below 6 ppm is harmful to aquatic life. The correct answer is 14 ppm.
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Correct Answer Logic:

The correct preposition is 'on' when referring to working on a task or project. 'Working on a project' is the standard phrase.

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MCQs Section QUESTION #4857
Question 4
Choose the correct synonym of "LACUNAE"
  • Tiny marine life
  • Shallow water
  • Local dialect
  • Missing partsโœ”๏ธ
Correct Answer Logic:
Lacunae (singular: lacuna) refers to gaps, missing portions, or unfilled spaces, especially in a manuscript, text, or argument.
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Correct Answer Logic:
At the Extended Abstract level, students transcend the given content domain, make connections to other areas, and think hypothetically. Key indicator verbs include: theorize, generalize, hypothesize, reflect, and generate. The response described โ€” linking to another theory, generalizing the principle, and proposing a new idea โ€” precisely matches these verbs.
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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5798
Question 6
An 'Adulterated' drug is one which contains a color other than the one prescribed. True or False?
  • Trueโœ”๏ธ
  • False
  • Partially True
  • None of these
Correct Answer Logic:
Adulteration includes using unprescribed coloring agents[cite: 7].
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English QUESTION #2745
Question 7
Identify the ERROR in: 'She is more smarter than her sister.'
  • She
  • is
  • more
  • smarterโœ”๏ธ
Correct Answer Logic:
'Smarter' is already a comparative adjective. Adding 'more' creates a double comparative, which is grammatically incorrect. It should be either 'smarter' or 'more smart'.
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General Knowledge QUESTION #8999
Question 8
The red color of blood is due to the presence of which pigment?
  • Chlorophyll
  • Insulin
  • Bile
  • Hemoglobinโœ”๏ธ
Correct Answer Logic:
Hemoglobin gives blood its red color.
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Physics QUESTION #7316
Question 9

A body moves eastward at $30\text{ m/s}$. After 10 s its velocity becomes $40\text{ m/s}$ northward. The magnitude of average acceleration is:

  • $1\text{ m/s}^2$
  • $7\text{ m/s}^2$
  • $\sqrt{7}\text{ m/s}^2$
  • $5\text{ m/s}^2$โœ”๏ธ
Correct Answer Logic:

Change in velocity: $\Delta\vec{v} = 40\hat{j} - 30\hat{i}$

$|\Delta v| = \sqrt{30^2 + 40^2} = \sqrt{900+1600} = \sqrt{2500} = 50\text{ m/s}$

Average acceleration $= \dfrac{50}{10} = \mathbf{5\text{ m/s}^2}$

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Chemistry QUESTION #7349
Question 10
The energy of the second Bohr orbit of hydrogen atom is \(-328\) kJ/mol. Based on this, the energy of the fourth Bohr orbit will be:
  • \(-41\) kJ/mol
  • \(-1312\) kJ/mol
  • \(-164\) kJ/mol
  • \(-82\) kJ/molโœ”๏ธ
Correct Answer Logic:
Bohr's energy formula: \(E_n = \dfrac{E_1}{n^2}\)

Given \(E_2 = -328\) kJ/mol, so \(E_1 = -328 imes 4 = -1312\) kJ/mol.

\(E_4 = \dfrac{-1312}{16} = -82\) kJ/mol

Key point: as \(n\) increases, energy becomes less negative โ€” outer orbits are less tightly bound.
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General Knowledge QUESTION #8928
Question 11
In which year did the French Revolution begin?
  • 1775
  • 1780
  • 1785
  • 1789โœ”๏ธ
Correct Answer Logic:
The French Revolution started in 1789.
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Logical Reasoning QUESTION #3955
Question 12
Despite their microscopic size, there are very few biological materials that these _____ cannot _____.
  • undermineโœ”๏ธ
  • disseminate
  • aerate
  • exterminate
Correct Answer Logic:
1
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Correct Answer Logic:
For infinitely many solutions, the determinant of coefficient matrix \(=0\) and the augmented matrix is consistent. Solving the determinant condition and consistency condition gives \(a\) and \(b\), then \(7a+3b=16\).
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Civil Engineering QUESTION #6646
Question 14
Why is 'Skin Reinforcement' required in deep RC beams?
  • To increase the shear capacity
  • To control crack widths in the tension zone of the webโœ”๏ธ
  • To prevent surface spalling during fire
  • To assist in the placement of stirrups
Correct Answer Logic:
In deep beams, the distance between the neutral axis and the main tension steel is large; skin steel prevents large cracks from forming in the web area.
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Correct Answer Logic:

Total water supply $=$ (people) $\times$ (days) $\times$ (rate per person per day).

Total supply $= 15 \times 21 = 315$ person-days.

For 9 people: days $= \dfrac{315}{9} = 35$ days.

Answer: 35.0 days.

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Correct Answer Logic:
Substitute \(y=4-x\) into \(f=xy-2x\): \(f=x(4-x)-2x=4x-x^2-2x=-x^2+2x\). Maximizing: \(f'=-2x+2=0\Rightarrow x=1\), giving \(f(1,3)=-1+2=1\). This is a candidate for absolute extremum.
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Correct Answer Logic:
Final concentration $= \dfrac{1}{2000} = 0.05\%\ \text{w/v}$. In $100$ mL $= 0.05$ g. In $25$ mL of stock: $0.05$ g. Stock concentration $= \dfrac{0.05}{25} \times 100 = 0.2\%\ \text{w/v}$. In $500$ mL stock: $\dfrac{0.2 \times 500}{100} = 1\ \text{g}$.
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Correct Answer Logic:

The Rule of Nines for adult burn assessment:

Body Region TBSA %
Head and neck 9%
Each upper limb (arm) 9%
Anterior trunk 18%
Posterior trunk 18%
Each lower limb (leg) 18%
Perineum/genitalia 1%
Total 100%

 

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Correct Answer Logic:

From the condition $|f(x)-f(y)|\le 2|x-y|^{3/2}$, divide both sides by $|x-y|$:

$\left|\frac{f(x)-f(y)}{x-y}\right|\le 2|x-y|^{1/2}$

Taking $y\to x$: $|f'(x)|\le 2\cdot0=0$, so $f'(x)=0$ for all $x$.

Hence $f$ is constant. Since $f(0)=1$, we have $f(x)=1$ for all $x$.

$\int_0^1 f^2(x)\,dx = \int_0^1 1\,dx = \mathbf{1}$

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General Ability and Fire Fighting QUESTION #5626
Question 20
Which firefighting method would be MOST appropriate for a small cooking oil fire on a stove?
  • Applying water directly to the fire
  • Covering the pan with a lid to smother itโœ”๏ธ
  • Using a CO2 extinguisher
  • Applying dry powder
Correct Answer Logic:
Covering the pan with a lid removes oxygen (smothering)
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