Previous Year UPSC Questions

Explanation

In January 2005, the Bombay Stock Exchange (BSE), in collaboration with the Federation of Indian Stock Exchanges (FISE), launched BSE IndoNext, an alternative trading platform aimed at enhancing liquidity and visibility for small and medium-sized enterprises (SMEs) listed on regional stock exchanges. This initiative was designed to integrate these SMEs into the broader capital market by providing a unified trading system. The platform operates under the existing BSE Online Trading (BOLT) system, allowing SMEs to raise capital, list their shares, and trade through BSE’s extensive network.

Explanation

Statement 1 is incorrect: In India, during the financial year 2004-2005, the value of exports saw a substantial increase, exceeding 10% compared to the previous financial year.

Statement 2 is incorrect: According to WTO data, India’s share in world merchandise exports in 2005 remained below 2%.

Explanation

The Nirmal Gram Puraskar (NGP) is an incentive scheme launched by the Government of India in October 2003 under the Total Sanitation Campaign (TSC). The primary objective of this award is to promote rural sanitation and hygiene by recognizing and rewarding Panchayati Raj Institutions (PRIs)--including Gram Panchayats, Blocks, and Districts--that have achieved full sanitation coverage and are open defecation-free.

Explanation

Statement 1 is correct: As per the 2001 Census, Kerala had the smallest gender literacy gap among the 28 states (excluding Delhi and Pondicherry), with male and female literacy rates of 94.24% and 87.72%, respectively, resulting in a 6.52% gap, the lowest in the country.

Statement 2 is incorrect: as the national average literacy rate in Census 2001 was 64.83%, while Rajasthan’s literacy rate was 60.41%, which was below the national average, making the statement incorrect.

Explanation

Statement 1 is incorrect: SAFTA agreement was signed on 6th January 2004 during the 12th SAARC Summit in Islamabad and came into effect on 1st January 2006, not 1st December 2005.

Statement 2 is correct: SAFTA required India, Pakistan, and Sri Lanka to reduce customs duties to 0-5% by 2013, while Least Developed Countries (LDCs) like Nepal, Bhutan, Bangladesh, and the Maldives were given additional time for compliance.

Explanation

Statement 1 is incorrect: The common bile duct transports bile from the liver and gallbladder and releases it into the duodenum, not the stomach. Bile aids in the emulsification of fats during digestion. The common bile duct is a vital component of the biliary system. It is formed by the union of the common hepatic duct and the cystic duct and its primary function is to carry bile from the liver and gallbladder.

Statement 2 is correct: The pancreatic duct carries digestive enzymes and bicarbonate from the pancreas into the duodenum. These enzymes play a crucial role in breaking down carbohydrates, proteins, and fats in the small intestine.

Explanation

Nutritional calcium is a vital mineral required for the growth and maintenance of strong bones and teeth. It also plays a crucial role in muscle function, nerve signaling, and blood clotting. Rice is not a significant source of calcium. While it provides carbohydrates and small nutrients it does not contain notable calcium levels. Fortified rice may contain added calcium but regular rice lacks this essential mineral for bone health. Options (b), (c), and (d) are incorrect:

Ragi or finger millet is an excellent plant-based source of calcium. It provides a good amount of calcium which is important for strong bones and teeth. Ragi is highly valued in regions where it is cultivated as a nutritious calcium-rich food. Skimmed milk is a good source of calcium and helps maintain bone health. Despite having reduced fat content skimmed milk retains high calcium levels. Dairy products like skimmed milk are among the best natural calcium sources. Eggs contain small amounts of calcium mainly found in the yolk. However they are not considered a major source of calcium compared to dairy products or fortified foods.

Explanation

Statement 1 is correct: Caffeine, a constituent of tea and coffee is a diuretic. It means it increases urine production by promoting fluid loss from the body. It acts by inhibiting the reabsorption of sodium and water in the kidneys which leads to increased urination.

Statement 2 is correct: Citric acid is a common additive in soft drinks. It is used to add tartness and flavor, and it also helps to preserve the drinks. Citric acid occurs naturally in citrus fruits such as lemons and oranges, and its acidic nature helps balance the sweetness of soft drinks and prolong shelf life.

Statement 3 is correct: Ascorbic acid, commonly known as Vitamin C, plays a crucial role in the synthesis of collagen, a protein that is essential for the structure of bones, teeth, skin, blood vessels, and cartilage. Deficiency in Vitamin C can lead to scurvy, a condition characterized by weakened connective tissue, bleeding gums, and joint pain due to impaired collagen formation.

Statement 4 is incorrect: Citric acid primarily serves as a flavoring agent and preservative. While it has antioxidant properties, it does not provide the essential health benefits of Vitamin C. Ascorbic acid (Vitamin C) is crucial for collagen formation, immune function, and iron absorption, making it irreplaceable by citric acid in these vital bodily processes.

Explanation

ELISA (Enzyme-Linked Immunosorbent Assay) is an immunological assay technique used to detect and quantify the presence of antibodies or antigens in a sample.

Statement 1 is incorrect: ELISA is not typically the first or most basic test for diagnosing cancer. Other tests, including imaging studies (X-rays, CT scans, MRIs), biopsies, and blood tests specific to cancer (e.g., PSA for prostate cancer, CA-125 for ovarian cancer) are usually used first. ELISA is used in a variety of diagnostic settings, such as for detecting infections (e.g., HIV, Hepatitis B) or monitoring immune responses.

Statement 2 is incorrect: Around 85% of humans have Rh+ (Rhesus positive) blood, meaning their red blood cells carry the Rh factor protein. Only 15% of humans have Rh- blood, lacking this protein. The presence or absence of the Rh factor is critical in blood transfusions and pregnancy.

Explanation

Option (d) is correct: The hepatic portal vein is the blood vessel that carries nutrient-rich blood from the stomach and small intestine to the liver. This blood is rich in nutrients absorbed from digested food and it contains waste products that need to be processed by the liver. In the liver, these nutrients are processed, stored, or released into the bloodstream as needed. The liver also detoxifies harmful substances present in the blood before returning it to the general circulation. Options (a), (b), and (c) are incorrect:

Left Hepatic Artery supplies oxygenated blood to the liver but is not responsible for carrying nutrient-rich blood from the digestive system. Hepatic Vein carries deoxygenated blood from the liver to the inferior vena cava, which returns it to the heart. It does not carry blood from the stomach or intestine to the liver. Right Hepatic Artery also supplies oxygenated blood to the liver but does not carry nutrient-rich blood from the digestive system.