Reading Mode - Questions

Coliform bacteria ($E.\;coli$, $Klebsiella$, $Enterobacter$) should be absent or very low in properly pasteurized milk. Detection uses the MPN method (lauryl sulfate tryptose broth with gas production) or direct plating on selective media (VRBA, Petrifilm CC). Coliforms in pasteurized milk indicate post-pasteurization contamination.

Uploaded by: Fani Warraich

Agronomy QUESTION #2080

Question 2786

Pre-emergence herbicides are most effective when:

Applied to the soil surface just before crop harvest
Applied to the soil surface before weed seeds germinate and seedlings emerge, requiring activation by rainfall or irrigation to move into the germinating weed seed zone where they disrupt seedling growth✔️
Applied to fully emerged weed foliage using directed spraying
Mixed with foliar fertilizers to improve weed control

Correct Answer Logic:

Pre-emergence herbicides act on germinating seeds in the soil — they must be incorporated into the top 2–5 cm of the germination zone by rainfall or irrigation (activation) to contact the target weed. They form a chemical barrier disrupting cell division or pigment synthesis in germinating seedlings. Dry, crusted soil surfaces, delayed activation, and deep-plowed weed seeds reduce their efficacy.

Uploaded by: Fani Warraich

Civil / Architecture QUESTION #2363

Question 2787

In the analysis of indeterminate structures using the Flexibility (Force) Method, the compatibility equation for a structure with $n$ redundants is expressed in matrix form as:

$[F]\{X\} = \{D_0\}$
$[K]\{D\} = \{P\}$
$[F]\{X\} + \{D_0\} = \{0\}$✔️
$[K]\{X\} = -\{D_0\}$

Correct Answer Logic:

The compatibility equation in the Force Method is $[F]\{X\} + \{D_0\} = \{0\}$ (or equivalently $[F]\{X\} = -\{D_0\}$), where $[F]$ is the flexibility matrix (flexibility coefficients $f_{ij}$ = displacement at $i$ due to unit force at $j$), $\{X\}$ is the vector of redundants, and $\{D_0\}$ is the displacement vector of the released structure (primary structure) under applied loads. Option B is the stiffness method equation.

Uploaded by: Fani Warraich

Security Measures to Maintain Law and Order QUESTION #7675

Question 2788

The term ''abscond'' means:

To hide from criminal proceedings✔️
To hide from friends
To hide from family
None of these

Correct Answer Logic:

'Abscond' in legal terminology means to hide or flee to avoid legal proceedings, especially criminal prosecution or arrest. An absconder is someone who deliberately hides from law enforcement or court proceedings.

Uploaded by: Fani Warraich

Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3203

Question 2789

The 'Renin-Angiotensin-Aldosterone System' (RAAS) is activated in response to:

High blood pressure
Low blood pressure or low sodium✔️
High blood sugar
Fever

Correct Answer Logic:

RAAS is a compensatory mechanism to increase blood volume and pressure.

Uploaded by: Fani Warraich

General Knowledge QUESTION #8928

Question 2790

In which year did the French Revolution begin?

1775
1780
1785
1789✔️

Correct Answer Logic:

The French Revolution started in 1789.

Uploaded by: Fani Warraich

Chemistry QUESTION #7509

Question 2791

The volume occupied by 4.75 g of acetylene gas (C$_2$H$_2$) at 50°C and 740 mmHg pressure is approximately _____ L.
$[R = 0.0826\ \text{L atm K}^{-1}\ \text{mol}^{-1}]$

6 L✔️
7 L
5 L
8 L

Correct Answer Logic:

Molar mass of C$_2$H$_2 = 2(12) + 2(1) = 26\ \text{g/mol}$

Moles $= \dfrac{4.75}{26} \approx 0.1827\ \text{mol}$

$T = 50 + 273 = 323\ \text{K}$

$P = \dfrac{740}{760}\ \text{atm} \approx 0.9737\ \text{atm}$

$V = \dfrac{nRT}{P} = \dfrac{0.1827 \times 0.0826 \times 323}{0.9737} \approx \dfrac{4.875}{0.9737} \approx \mathbf{6}\ \text{L}$

Uploaded by: Fani Warraich

Tourism & Hospitality Management QUESTION #1620

Question 2792

According to the Tourism Management course, 'skills shortages in tourism' is addressed under which management area?

Financial management and budgeting
Human resource management in tourism, covering education, training, flexibility, innovation, recruitment, retention, and turnover✔️
Marketing and destination branding
Legal compliance and licensing

Correct Answer Logic:

Module 2 of the Tourism Management course — 'Managing Tourism Businesses' — specifically addresses Human Resource Management challenges, including skills shortages in tourism, the role of education and training, flexibility and innovation in HR management, as well as recruitment, retention, turnover, rewards, benefits, and compensation strategies.

Uploaded by: Fani Warraich

Medicinal Chemistry and Biopharmaceutics QUESTION #3824

Question 2793

If $400$ mg of potassium permanganate is dissolved in $2.5$ L of water, what is the percentage concentration of the resulting solution?

$0.016\%$✔️
$0.032\%$
$0.064\%$
$0.16\%$

Correct Answer Logic:

$400\ \text{mg} = 0.4\ \text{g}$ in $2500\ \text{mL}$. Concentration $= \dfrac{0.4}{2500} \times 100 = 0.016\%\ \text{w/v}$.

Uploaded by: Fani Warraich

Chemistry QUESTION #7139

Question 2794

Which of the following crystal defects occurs when an ion is displaced from its regular lattice site to an interstitial position?

Schottky defect
Frenkel defect✔️
Metal deficiency defect
Vacancy defect

Correct Answer Logic:

The Frenkel defect is a dislocation defect where an ion (usually the smaller cation) leaves its original lattice site and occupies an interstitial space. This creates a vacancy at the original site but does not change the overall density of the crystal.

Uploaded by: Fani Warraich

General Knowledge QUESTION #8882

Question 2795

From which US state did Barack Obama come when he was elected President?

New York
California
Illinois✔️
Florida

Correct Answer Logic:

Obama was a US Senator from Illinois.

Uploaded by: Fani Warraich

Boilers Mechanical Engineering QUESTION #2396

Question 2796

Kinematic viscosity $\nu$ is related to absolute (dynamic) viscosity $\mu$ and fluid density $\rho$ by:

$\nu = \mu \cdot \rho$
$\nu = \mu / \rho$✔️
$\nu = \rho / \mu$
$\nu = \mu^2 / \rho$

Correct Answer Logic:

Kinematic viscosity: $\nu=\mu/\rho$ (m²/s). The Reynolds number $Re=VL/\nu=\rho VL/\mu$.

Uploaded by: Fani Warraich

English QUESTION #8552

Question 2797

We _______ waiting here for two hours.

have been✔️
has been
are
were

Correct Answer Logic:

'Have been waiting' is present perfect continuous.

Uploaded by: Fani Warraich

Chemistry QUESTION #434

Question 2798

The percentage of carbon in medium carbon steel is

0.7-1.5
0.1-0.2
0.2-0.7✔️
1.6-2.00

Correct Answer Logic:

Medium carbon steel has 0.2-0.7% carbon

Uploaded by: Fani Warraich

Boilers Mechanical Engineering QUESTION #3988

Question 2799

'Scaling' on the internal surfaces of a boiler tube is dangerous because it:

Makes the boiler look old
Acts as an insulator, causing the metal to overheat and fail✔️
Increases the weight of the boiler
Makes the water taste bad

Correct Answer Logic:

Scale has low thermal conductivity; heat cannot transfer to water, causing the tube metal to reach melting/weakening points.

Uploaded by: Fani Warraich

Accounting & Finance QUESTION #9626

Question 2800

Gross Profit is Rs. 40,000. Administrative expenses are Rs. 15,000, selling expenses Rs. 5,000, and financial expenses Rs. 5,000. There is also other income of Rs. 2,000. What is the Net Profit?

Rs. 15,000
Rs. 17,000✔️
Rs. 10,000
Rs. 12,000

Correct Answer Logic:

Net Profit = Gross Profit – Operating Expenses + Other Income. Operating expenses = 15,000 + 5,000 + 5,000 = Rs. 25,000. Operating Profit = 40,000 – 25,000 = Rs. 15,000. Add other income: 15,000 + 2,000 = Rs. 17,000.

Uploaded by: Fani Warraich

More Options

Suggest a Question