Punjab Police Constable Mock Test - 8 Free Online Test 2026

Directive Principles of State Policy are enshrined in Part IV (Articles 36-51) of the Indian Constitution.

Directive Principles of State Policy are based on the principles of socialism and represent the ideals to be achieved by the State for the welfare of its citizens.

Article 124 deals with the establishment and composition of the Supreme Court of India. It consists of a Chief Justice of India and a maximum of 34 judges.

Harilal Jekisundas Kania was the first Chief Justice of India, serving from 1950 to 1951.

To determine the mass of a body, we can use Newton's second law of motion, which states that force (F) is equal to mass (m) multiplied by acceleration (a), or F = ma.

Given: Force (F) = 90 N Acceleration (a) = 2.6 m/s²

Using the formula F = ma, we can rearrange it to solve for mass: m = F / a

Substituting the given values: m = 90 N / 2.6 m/s² ≈ 34.6 kg

Therefore, the mass of the body is approximately 34.6 kg.

The correct answer is b) 34.6 kg.

Mechanical waves require a medium (solid, liquid, or gas) to travel through. Examples include sound waves and seismic waves.

Electromagnetic waves, such as light and radio waves, can propagate in a vacuum without requiring a medium.

Isaac Newton is credited with discovering the concept of gravity through his work on the laws of motion and universal gravitation. His famous law of gravitation states that every mass attracts every other mass with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.

James Chadwick discovered the existence of neutrons in 1932. Neutrons are subatomic particles found in the nucleus of an atom, along with protons. Chadwick's discovery of neutrons played a crucial role in understanding nuclear reactions and the development of nuclear power.

The chemical formula for sodium chloride is NaCl. It is composed of one sodium ion (Na+) and one chloride ion (Cl-).

Aluminum can be extracted from its ore (bauxite) using electrolysis. Copper, silver, and iron are typically extracted using other methods.

Natural selection is the process by which individuals with traits that increase their chances of survival and reproduction are more likely to pass on their genes to the next generation. It is the primary mechanism of evolution.

Wisdom teeth, appendix, and the tailbone (coccyx) are examples of vestigial structures in humans. These structures have lost their original function over time but are still present in our bodies.

NTPC Limited was certified as a Top Employer in 2024 by the Top Employers Institute, highlighting the organization's commitment to excellence in HR practices. The award was accepted by Director Shri Dilip Kumar Patel at the Top Employers 2024 Certification Celebration Event in Singapore.

Larsen and Toubro (L&T) have secured a project to set up a solar power plant in Dubai, United Arab Emirates.

The theme of IGNCA's Ministry of Culture tableau that secured the 1st prize at the Republic Day Celebration Parade 2024 was 'India: Mother of Democracy.' The tableau highlighted the blend of tradition and innovation, incorporating the anamorphic technique to showcase India's rich heritage.

The International Day of Human Fraternity is observed on February 4th each year, serving as a poignant reminder of unity amid diversity. This day emphasizes global solidarity and the vital role of compassion, respect, and empathy in fostering harmony and overcoming conflict.

IEW 2024 in Goa is anticipated to witness ministerial-level delegations from 17 countries, with six countries - Canada, Germany, Russia, the Netherlands, the UK, and the USA - also setting up pavilions at the event.

INS Sumitra played a crucial role in responding to a distress call and rescuing the hijacked Iranian fishing vessel (FV) Iman in the Gulf of Aden during anti-piracy operations.

The 4th National Chilika Birds Festival was inaugurated by the Chief Minister in Odisha. The festival aims to showcase Odisha as a prominent birding hub, with various activities, including a captivating photo exhibition and birding excursions to Mangalajodi – Nalabana.

HPCL's Compressed Biogas (CBG) plant, with a processing capacity of 100 MTPD of rice straw and an investment of Rs 133 crore, is located in Budaun, Uttar Pradesh. It supports the National Biofuel Policy and contributes to the goal of reducing import dependency by 10 per cent.

Let the number of hens be x and the number of cows be y.

Then, x + y = 48 .... (i)

  and 2x + 4y = 140   ⇒   x + 2y = 70 .... (ii)

Solving (i) and (ii) we get: x = 26, y = 22.

∴ The required answer = 26.

Let the number of students in Section C = X
The combined number of students in sections A and B = 200 – X
X × 104 + (200 – X) × 80 = 200 × 95
104X + 16000 – 80X = 19000
3000 = 24X
125 = X
Hence, Option D is correct.

Let their ages 5 years ago be 2x, 3x, 7x and 8x. Their ages now 2x + 5, 3x + 5, 7x + 5, 8x + 5.

Or, 20x + 20 = 140 ⇒ 2Ox = 120 ⇒ x = 6

Present age o f Nishu = 2 x 6 + 5 = 17 years

Present age o f mother = 7 x 6 + 5 = 47 years

Hence, required years (47 -17) years = 30 years