RRB ALP & Technician CBT-1 | Mock Test Set : 1

Let the age of the younger friend be x. The age of the older friend = 2x According to the given information, x + 2x = 30 Solving the equation, we get x = 10 So, the ages are 10 years and 20 years.

The Khajuraho temples, built between 950 and 1050 CE, are primarily dedicated to Hindu deities and reflect the architectural brilliance of the Chandela dynasty.

Total people = Position from the front + Position from the back - 1
= 25 + 12 - 1
= 36

The "Mahabharata," one of the longest epic poems in the world, is traditionally attributed to the sage Vyasa.

According to the law of conservation of angular motion, an object will maintain its rotational motion unless an external torque is applied.

Neutrophils are a type of white blood cell that are specialized in phagocytosis, engulfing and destroying pathogens in the early stages of an immune response.

Sarojini Naidu, also known as the Nightingale of India, was the first woman to become the President of the Indian National Congress in 1925.

The melting point is the temperature at which a solid substance changes into a liquid. It is the opposite of the freezing point, which is the temperature at which a liquid changes into a solid.

The gravitational force is inversely proportional to the square of the distance, so if the distance is tripled, the force becomes one-ninth as strong.

Let the price of the first item be 3x.
(3x/4) = Rs. 24
x = Rs. 8
Price of the first item = 3 * Rs. 8 = Rs. 24.
So, the correct answer is Rs. 24.

75% of the data is below 20 (The 75th percentile indicates that 75% of the data falls below that value)

Let x be the number of years. (40 + x) = 2 * (15 + x) Solving the equation, x = 10. Therefore, the correct answer is 10.

The coding logic can be determined by counting the letters in each direction. EAST=4, SOUTH=5, WEST=4. Applying the same logic, NORTH has 5 letters, so its code is 5 + 5 = 10.

Alkenes can undergo addition reactions, where the double bond is broken to form single bonds, converting them into alkanes.

Ethanol is commonly used as a disinfectant due to its ability to kill microorganisms such as bacteria and viruses.

Selling price = Cost price + Profit = Rs. 500 + 15% of Rs. 500 = Rs. 500 + Rs. 75 = Rs. 575

Electrons have the least mass among the given options. They are approximately 1/1836 times lighter than either a proton or a neutron.

The series follows the pattern of multiplying each term by 2 and subtracting 1. So, 15 * 2 - 1 = 29, which is the missing term.

During the electrolysis of water, oxidation occurs at the anode, leading to the formation of oxygen gas and protons. The balanced chemical equation for this reaction is 2H₂O(l) → O₂(g) + 4H⁺(aq) + 4e⁻.

The Partition of Bengal was announced by Lord Curzon, the Viceroy of India, in 1905, dividing the Bengal province into two parts, with the intent of weakening the nationalist movement in Bengal.

Time = Distance / Speed
Time = 240 km / 80 km/h = 3 hours

Guru Nanak, born in 1469, was the founder of Sikhism. He was the first of the ten Sikh Gurus.

Nalanda University, located in present-day Bihar, India, was a renowned center of learning in ancient India.

In CH4 (methane), the bonding between carbon and hydrogen atoms involves the sharing of electrons, characteristic of covalent bonding.

There is only 1 way to get the same number on all three dice, and there are 6^3 = 216 possible outcomes. Therefore, the probability is 1/216.

The cuticle is a waxy layer on the surface of leaves that helps prevent excessive water loss from the plant through evaporation.

Analogous structures are similar traits in unrelated species that have evolved independently due to inhabiting similar environments, such as the wings of insects and birds, which serve the same function but have different underlying structures.

$7÷(4-2)\times 5+3$
$=7÷2\times 5+3$
$=3.5\times 5+3$
$=17.5+3$
$=20.5$
Therefore, the correct answer is 20.5

The law of conservation of energy states that the total energy of an isolated system remains constant; it cannot be created or destroyed, only transferred or converted from one form to another.

Prokaryotic cells lack membrane-bound organelles such as a nucleus, mitochondria, or endoplasmic reticulum. Instead, their DNA is typically found in a region called the nucleoid.

Resonance occurs when an external force matches the natural frequency of an object, causing it to vibrate with maximum amplitude.

Kelvin is a unit of temperature, not time. Time is measured in seconds, minutes, hours, etc.

The focal length of a concave lens is negative, indicating that the parallel rays diverge as if they originated from a virtual focus behind the lens.

The Kelvin temperature (K) is equal to the Celsius temperature (°C)+ 273.15.