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According to VSEPR theory, a molecule with 3 bond pairs and 1 lone pair (e.g., $NH_3$) has a trigonal pyramidal shape. The lone pair repels bond pairs, pushing them downward.

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General Knowledge QUESTION #8914

Question 6526

The gas commonly used in balloons (lighter than air) is:

Hydrogen
Helium✔️
Oxygen
Carbon dioxide

Correct Answer Logic:

Helium is non-flammable and lighter than air.

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Ability / HR / Governance / Special Education QUESTION #1875

Question 6527

Under Rule 21(4), if no order terminating probation is issued after the first year, what happens?

Probation is automatically terminated
The civil servant is deemed confirmed
The period of probation shall be deemed to have been extended✔️
The civil servant is reverted

Correct Answer Logic:

Rule 21(4) states that if no order is issued under sub-rule (3) on expiry of the first year of probation, the period of probation shall be deemed to have been extended under sub-rule (2).

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Math Physics Chemistry Biology QUESTION #565

Question 6528

Pick the biotic component from the following.

Soil
Water
Atmosphere
Animals✔️

Correct Answer Logic:

Animals are biotic (living) components

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General Knowledge QUESTION #4724

Question 6529

Biman is the national airline of which country?

Sri Lanka
Nepal
Bangladesh✔️
Myanmar

Correct Answer Logic:

Biman Bangladesh Airlines is the national flag carrier of Bangladesh, established in 1972 after the country's independence.

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Biomedical Sciences QUESTION #3801

Question 6530

In which inherited condition is the electrolyte composition of sweat significantly altered as a diagnostic feature?

Hypothyroidism
Glomerulonephritis
Diabetes insipidus
Cystic fibrosis✔️

Correct Answer Logic:

Cystic fibrosis causes defective CFTR chloride channels, leading to elevated sodium and chloride concentrations in sweat, which forms the basis of the sweat chloride test.

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Education QUESTION #10858

Question 6531

SOLO Taxonomy provides a systematic way of describing a learner's:

Ability
Understanding✔️
Performance
Skill

Correct Answer Logic:

SOLO Taxonomy (Structure of Observed Learning Outcomes), developed by Biggs and Collis (1982), describes the quality of a learner's understanding of a topic through five increasingly complex levels: prestructural, unistructural, multistructural, relational, and extended abstract. It helps teachers assess how well students understand (depth and complexity), not merely whether they know facts. It is used for designing assessments and providing qualitative feedback.

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Bio-Technology QUESTION #10621

Question 6532

Metabolic flux analysis (MFA) uses stoichiometric models to:

Predict the three-dimensional structure of metabolic enzymes
Quantify intracellular fluxes through metabolic pathways from measured extracellular rates✔️
Determine the genome sequence of industrially relevant microorganisms
Control bioreactor temperature and pH in real time

Correct Answer Logic:

Metabolic Flux Analysis (MFA) uses a stoichiometric model of intracellular reactions and measured extracellular rates (substrate uptake, product secretion, O₂ consumption, CO₂ evolution) to calculate intracellular fluxes by solving the mass balance equation: $\mathbf{S} \cdot \mathbf{v} = 0$ at pseudo-steady state. ¹³C-MFA uses isotope labelling to resolve fluxes in parallel pathways. MFA is essential for identifying bottlenecks in metabolic engineering projects.

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Accounting & Finance QUESTION #6146

Question 6533

Who are the internal users of financial information?

Bank
Directors
Employees
Potential investors

1 and 2
2 and 3✔️
2 and 4
3 and 4

Correct Answer Logic:

Option B (2 and 3) is correct.

Directors — manage the company, internal users.
Employees — employed by the business, internal users.

Banks and potential investors are external users.

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Mathematics QUESTION #7490

Question 6534

The sum of first 20 terms of the sequence 0.7, 0.77, 0.777, … is:

$\frac{7}{81}(179-10^{-20})$
$\frac{7}{9}(99-10^{-20})$
$\frac{7}{81}(179+10^{-20})$✔️
$\frac{7}{9}(99+10^{-20})$

Correct Answer Logic:

Each term: $0.7 = \frac{7}{9}(1-10^{-1})$, $0.77 = \frac{7}{9}(1-10^{-2})$, etc. Sum = $\frac{7}{9}\sum_{k=1}^{20}(1-10^{-k}) = \frac{7}{9}[20 - \frac{10^{-1}(1-10^{-20})}{1-10^{-1}}] = \frac{7}{9}[20 - \frac{1-10^{-20}}{9}] = \frac{7}{9} \cdot \frac{180-1+10^{-20}}{9} = \frac{7}{81}(179+10^{-20})$.

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The Elections Act 2017 QUESTION #9407

Question 6535

Under Section 9(3), after publication of a returned candidate's name, the Commission's power to declare a poll void under sub-section (1) may be exercised within how many days of such publication before the election becomes final (subject to election petition)?

Thirty days
Forty-five days
Sixty days✔️
Ninety days

Correct Answer Logic:

Section 9(3) allows the Commission to exercise void-declaration powers 'before the expiration of sixty days after such publication'; if not finally disposed of within this period, the election becomes final subject to election petition.

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General Knowledge QUESTION #8663

Question 6536

How many states are there in the United States of America?

51
49
52
None of above✔️

Correct Answer Logic:

There are 50 states (None of above).

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English QUESTION #8311

Question 6537

Health is preferable _______ riches.

On
Of
To✔️
Upon

Correct Answer Logic:

'Preferable to' is the correct comparative preposition.

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General Knowledge QUESTION #11558

Question 6538

In networking, the acronym NIC stands for:

Network Information Center
Network Identity Card
Network Interface Card✔️
Network Internet Card

Correct Answer Logic:

NIC (Network Interface Card) is hardware that connects a computer to a network, providing the physical interface between the computer and network medium. Every NIC has a unique MAC address burned into hardware. Modern computers often have NICs integrated into the motherboard.

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Psychology QUESTION #9820

Question 6539

McClelland's method of measuring the achievement motive made primary use of:

Self-ratings
Fantasy✔️
Parent's estimates of level of aspiration
Activity level

Correct Answer Logic:

McClelland measured n-Ach using the TAT (Thematic Apperception Test), a projective technique where subjects tell stories about ambiguous pictures. The fantasy content of these stories was coded for achievement-related themes.

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Dairy Food Science and Technology QUESTION #5888

Question 6540

Which milk protein fraction is most responsible for heat stability of milk?

$\beta$-casein due to its hydrophobic character
$\kappa$-casein due to its surface-active glycopeptide moiety stabilizing micelles✔️
$\alpha$-lactalbumin due to its calcium-binding domain
$\beta$-lactoglobulin due to disulfide bonding

Correct Answer Logic:

$\kappa$-casein, located on the outer surface of casein micelles, provides steric and electrostatic stabilization through its negatively charged hydrophilic glycomacropeptide (GMP) tail. Its removal by chymosin or denaturation during heating ($>70^{\circ}\text{C}$) destabilizes micelles.

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