JKSSB Website Operator 2026 Paper

Explanation

The correct answer is:

✅ A) Reducing energy consumption

Explanation:
The passage clearly mentions adopting sustainable practices, such as:

• Reducing energy consumption

• Protecting forests

• Promoting renewable energy sources

These steps help mitigate (reduce) global warming.

The other options actually worsen global warming.

✔️ So, the correct strategy suggested is reducing energy consumption.

Explanation

The correct answer is:

✅ D) It causes many species to decline due to the changing climate

Explanation:
The passage clearly states that many plants and animals cannot adapt quickly to climate change, which leads to a decline in their populations. This loss of biodiversity is a major impact of global warming.

✔️ So, global warming negatively affects biodiversity by causing species decline.

Explanation

The correct answer is:

✅ B) Human activities like burning fossil fuels and deforestation

Explanation:
The passage clearly states that global warming is primarily caused by human activities, especially:

• Burning of fossil fuels (coal, oil, natural gas)

• Deforestation

• Industrial processes releasing greenhouse gases like CO₂ and methane

✔️ Therefore, the primary cause of global warming is human activities.

Explanation

Convert the speed from km/h to m/s:

Since the lengths are in meters and the time options are in seconds, we must convert the speed.

$$\text{Speed} = 54 \times \frac{5}{18} = 15 \text{ m/s}$$

2. Calculate $T_1$ (Time to cross a pole):

When a train crosses a pole, the total distance traveled is equal to the length of the train.

$$T_1 = \frac{\text{Length of Train}}{\text{Speed}}$$

$$T_1 = \frac{120}{15} = 8 \text{ seconds}$$

3. Calculate $T_2$ (Time to cross the platform):

When a train crosses a platform, the total distance traveled is the sum of the lengths of the train and the platform.

$$\text{Total Distance} = 120 + 180 = 300 \text{ m}$$

$$T_2 = \frac{300}{15} = 20 \text{ seconds}$$

4. Find the difference $(T_2 - T_1)$:

$$\text{Difference} = 20 - 8 = \mathbf{12 \text{ seconds}}$$

Shortcut Method for your Students:

The difference in time $(T_2 - T_1)$ is simply the time taken by the train to cover the length of the platform only, since the train length is common in both cases.

$$\text{Difference} = \frac{\text{Length of Platform}}{\text{Speed}}$$

$$\text{Difference} = \frac{180}{15} = \mathbf{12 \text{ seconds}}$$

Explanation

Calculate Downstream Speed ($D_s$):

$$\text{Speed} = \frac{\text{Distance}}{\text{Time}}$$

$$D_s = \frac{30 \text{ km}}{2 \text{ hours}} = 15 \text{ km/hr}$$

2. Calculate Upstream Speed ($U_s$):

$$U_s = \frac{30 \text{ km}}{3 \text{ hours}} = 10 \text{ km/hr}$$

3. Calculate the time required for the new journey:

The journey consists of two parts: 45 km downstream and 30 km upstream.

• Time for 45 km downstream:

  $$t_1 = \frac{\text{Distance}}{\text{Downstream Speed}} = \frac{45}{15} = 3 \text{ hours}$$

• Time for 30 km upstream:

  $$t_2 = \frac{\text{Distance}}{\text{Upstream Speed}} = \frac{30}{10} = 3 \text{ hours}$$

Explanation

To find the value of $x \times y$, we first need to determine the individual values of $x$ and $y$ from the given equations:

1. $x + y = 14$ --- (Equation 1)

2. $x - y = 4$ --- (Equation 2)

Step 1: Solve for $x$

Add Equation 1 and Equation 2:

$$(x + y) + (x - y) = 14 + 4$$

$$2x = 18$$

$$x = 9$$

Step 2: Solve for $y$

Substitute the value of $x = 9$ into Equation 1:

$$9 + y = 14$$

$$y = 14 - 9$$

$$y = 5$$

Step 3: Find the product $x \times y$

$$x \times y = 9 \times 5$$

$$x \times y = \mathbf{45}$$

Quick Formula for your Students:

When given the sum ($S$) and the difference ($D$) of two numbers, the product is:

$$\text{Product} = \frac{S^2 - D^2}{4}$$

$$\text{Product} = \frac{14^2 - 4^2}{4} = \frac{196 - 16}{4} = \frac{180}{4} = \mathbf{45}$$

Explanation

Define the shares:

• Let C's share = $x$

• B gets Rs. 30 more than C, so B's share = $x + 30$

• A gets twice as much as B, so A's share = $2(x + 30) = 2x + 60$

2. Set up the equation:

The total sum is Rs. 270.

$$A + B + C = 270$$

$$(2x + 60) + (x + 30) + x = 270$$

$$4x + 90 = 270$$

$$4x = 180$$

$$x = 45$$

3. Calculate individual shares:

• C = $45$

• B = $45 + 30 = 75$

• A = $2 \times 75 = 150$

4. Find the ratio A : B : C:

$$\text{Ratio} = 150 : 75 : 45$$

Divide all terms by their greatest common divisor (15):

• $150 \div 15 = 10$

• $75 \div 15 = 5$

• $45 \div 15 = 3$

Final Ratio: 10 : 5 : 3

Explanation

• My grandfather": This refers to Ram's grandfather.

• "Only son of my grandfather": The only son of one’s paternal grandfather is one’s Father.

• "Daughter of the only son": This means the woman is the Daughter of Ram's father.

• Relationship to Ram: The daughter of Ram's father is Ram's Sister.

Explanation

To find the shortest distance (displacement), we can map Manisha's movements on a coordinate plane, starting at her house $(0, 0)$.

1. Walks 150m South: Coordinates become $(0, -150)$.

2. Turns Right and walks 80m: Turning right while facing South means moving West. Coordinates become $(-80, -150)$.

3. Turns Left and walks 60m: Turning left while facing West means moving South. Coordinates become $(-80, -210)$.

4. Turns Left and walks 280m: Turning left while facing South means moving East.

   • New X-coordinate: $-80 + 280 = 200$.

   • Final coordinates of the school: $(200, -210)$.

5. Calculate the Shortest Distance:

The shortest distance is the straight line from the starting point $(0, 0)$ to the final point $(200, -210)$. We use the Pythagorean theorem:

$$\text{Distance} = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}$$

$$\text{Distance} = \sqrt{200^2 + (-210)^2}$$

$$\text{Distance} = \sqrt{40,000 + 44,100}$$

$$\text{Distance} = \sqrt{84,100}$$

$$\text{Distance} = \mathbf{290\text{m}}$$

Explanation

1. Track the movements:

• Initial Direction: South

• Clockwise (CW) turns: $90^\circ + 90^\circ = 180^\circ$

• Anticlockwise (ACW) turns: $180^\circ$

2. Calculate the Net Deviation:

$$\text{Net Deviation} = \text{Total CW} - \text{Total ACW}$$

$$\text{Net Deviation} = 180^\circ - 180^\circ = 0^\circ$$

3. Conclusion:

Since the net deviation is $0^\circ$, the man is facing the same direction he started with.

• Final Direction: South