Maharashtra Police Constable Mock Test - 5 - Maharashtra Police Constable MCQ

Laissez-faire is an economic theory that advocates minimal government intervention in economic affairs, including trade. It suggests that free markets should operate without restrictions, and the government should not interfere with the pricing, production, or distribution of goods and services.

The New Economic Policy emphasized privatization, reducing government intervention, and promoting market-oriented reforms.

The manufacturing industry involves the production of goods on a large scale using machines, tools, and skilled labor. It is an essential part of economic development and provides finished products for consumption.

The Calcutta Stock Exchange (CSE) is one of the oldest stock exchanges in India. However, the London Stock Exchange (LSE) is not a stock exchange in India.

When a country exports more than it imports, it is said to have a trade surplus. This situation indicates that the country is earning more foreign exchange than it is spending, which is beneficial for its economy.

In a mixed economy, there is coexistence of both public sector enterprises, owned by the government, and private sector enterprises, owned by individuals or corporations.

The central bank of the USA is called the Federal Reserve System or the Federal Reserve (often referred to as the Fed).

Exocytosis is the process in which the membrane of a vesicle can fuse with the plasma membrane and extrude its contents to the surrounding medium.

The correct answer is D: All of the above.

The "law of segregation" is one of the fundamental principles of genetics, proposed by Gregor Mendel. It states that during the formation of gametes (sex cells), the alleles (alternative forms of a gene) separate from each other. This means that each gamete carries only one allele for each gene.

Option A: The law of segregation does not specifically refer to the purity of genes. Instead, it describes the separation of alleles.

Option B: This statement is correct. The law of segregation states that alleles separate from each other during gametogenesis, which is the process of gamete formation (such as sperm and egg cells).

Option C: This statement is also correct. The segregation of factors (alleles) is due to the segregation of chromosomes during meiosis. Meiosis is a specialized type of cell division that produces haploid cells (gametes) with half the number of chromosomes as the parent cell.

Therefore, the correct answer is D, as all of the statements are true regarding the "law of segregation."

Genetic sex determination, also known as chromosomal sex determination, relies on the presence of specific sex chromosomes (e.g., XX and XY in humans) that determine the development of male or female traits.

An analogous structure refers to structures that have similar functions but different evolutionary origins. The human arm and whale flipper are examples of analogous structures as they both serve the function of locomotion in different lineages.

The turnip is a root vegetable commonly grown in temperate climates worldwide for its white, fleshy taproot.

The correct answer is C: elongated cells with thickening at the corners.

Collenchyma cells are characterized by their elongated shape and thickening at the corners. These cells have primary cell walls composed of cellulose and pectin, similar to other plant cells. However, collenchyma cells have additional localized thickenings in the cell corners, which provide mechanical support to the plant.

The thickened corners in collenchyma cells can vary in shape and appearance. They may appear as discrete spots, continuous bands, or even form a complete ring around the cell. The thickened areas contain extra cellulose and may also contain hemicellulose and lignin, which contribute to the cell's rigidity and strength.

The thickened corners of collenchyma cells allow them to provide flexible support to growing plant organs, such as stems and petioles. They help the plant withstand bending and mechanical stress while still allowing for some degree of flexibility.

Alok Sharma, a senior IPS officer, has been appointed as the new director of the Special Protection Group (SPG), succeeding the late SPG chief Arun Kumar Sinha.

State visit is a visit to foreign countries led by the head of the state or a government, acting in their sovereign capacity. Prime Minister Narendra Modi is set to go to the US on a state visit on June 22 following an invitation from President Joe Biden and First Lady Jill Biden.

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.

Former US secretary of state Hillary Clinton announced a Global Climate Resilience Fund of 50 million dollars for women to fight climate change.
She announced the fund while addressing salt pan workers near Kuda village in Gujarat’s Surendranagar district. The fund will empower women and communities to fight climate change and help provide new livelihood resources and education.

Sumit Antil, the reigning Paralympic champion in javelin throw, broke the world record in the F64 category at the 2023 Asian Para Games with a throw of 73.29 meters. This surpassed his previous world record of 70.83 meters.

The Jammu & Kashmir government, under the leadership of LG Manoj Sinha, approved 10% reservation for Paharis and included 15 new castes in the Other Backward Classes (OBCs) category, signalling a move towards greater inclusivity in reservation policies.

DNA fingerprinting is a chemical test that shows the genetic makeup of a person or other living things.
It‘s used as evidence in courts, to identify bodies, track down blood relatives, and to look for cures for
disease.
Uses:
DNA fingerprinting most often has been used in court cases and legal matters. It can:

• Physically connect a piece of evidence to a person or rule out someone as a suspect.
• Show who your parents, siblings, and other relatives may be.
• Identify a dead body that‘s too old or damaged to be recognizable.
• DNA fingerprinting is extremely accurate. Most countries now keep DNA records on file in much the same way police keep copies of actual fingerprints.
• For criminal identification. Hence, option1 is correct.
• To resolve disputes of maternity/paternity. Hence, option 2 is correct.
• To identify mutilated remains. Hence, option 3 is correct.
• In cases of exchange of babies in a hospital ward. Hence, option 4 is correct.
• In forensic wildlife. Hence, option 5 is correct.

It also has medical uses. It can:

• Match tissues of organ donors with those of people who need transplants.
• Identify diseases that are passed down through your family.
• Help find cures for those diseases, called hereditary conditions.

A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapour gas-discharge lamp that uses fluorescence to produce visible light.

An electric current in the gas excites mercury vapour, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow. Hence option (a) is the correct answer.

Astatine is a radioactive element of the halogen series: a decay product of uranium and thorium that occurs naturally in minute amounts and is artificially produced by bombarding bismuth with alpha particles. There are currently no uses for astatine outside of research.

Cinnabar is a toxic mercury sulfide mineral with a chemical composition of HgS. It is the only important ore of mercury. It has a bright red colour that has caused people to use it as a pigment, and carve it into jewellery and ornaments for thousands of years in many parts of the world.

Phases of soft landing, the 15 minutes of terror:

• The Rough Braking Phase: It includes reducing the lander’s horizontal speed from a range of  1.68 km/sec at a height of 30 km from the lunar surface, to almost zero for a soft landing at  the designated site.
• Attitude Hold Phase: At a height of 7.42 km from the surface, the lander is to go into an ‘attitude  hold phase’ lasting around 10 seconds, during which it should tilt from a horizontal to a vertical position while covering a distance of 3.48 km.
• The “fine braking phase” lasts around 175 seconds, during which the  lander is to move fully into a vertical position. 
• “Terminal descent” is the final stage, when the spacecraft is supposed to descend totally vertically onto the surface

Explanation:

Let one multiple of 5 be x then the next consecutive multiple of will be (x+5) According to question,

Then the number are 30 and 35.

(a*25)/100 = b(2*65)/100
a*25 = b*130
a/b = 130/25 = 26/5
b:a = 5:26

Square number can never end in 2,7

Normal process:
Runs in 26th inning = Runs total after 26 innings – Runs total after 25 innings
= 26 X 58 – 25 X 56

For Easy calculation use:

= (56 + 2) X 26 – 56 X 25 )
= 2 X 26 + (56 X 26 – 56 X 25)
= 52 + 56 = 108

Since the average increases by 2 runs per innings, it is equivalent to 2 runs being added to each score in the first 25 innings. Now, since these runs can only be added by the runs scored in the 26th inning, the score in the 26th inning must be 25 X 2 = 50 runs higher than the average after 26 innings (i.e. new average = 58).

Hence, runs scored in 26th inning:
= New Average + Old innings X Change in average

= 58 + 25 X 2
= 108 

In order to find the average age of the family before Ram was born, we need to know the age of the youngest member of the family. 
Since, we do not know the age of the youngest member, we can not calculate the total age of the family before Ram was born.
Hence, we can not calculate the answer with the given conditions.

Thus, D is the right choice.