UPSC 2001 Prelims Questions with Answers

Explanation

Statement 1 is incorrect: Ionization potential (or Energy) increases across a period (left to right) because of increasing nuclear charge, which leads to a stronger attraction between the electrons and the nucleus, making electron removal harder. The effective nuclear charge (Z_eff) increases as protons are added, while shielding remains nearly constant.

Statement 2 is correct: Electron affinity generally becomes less negative down a group. As the atomic size increases, the added electron is farther from the nucleus and experiences greater shielding, reducing the energy released during electron addition. Across a period, electron affinity generally becomes more negative, reflecting stronger attraction to added electrons. Thus, in a group of elements, electron affinity decreases as atomic weight increases.

Statement 3 is incorrect: Electronegativity increases across a period due to increasing nuclear charge, which enhances the ability to attract bonding electrons. However, group-wise, it decreases as atomic size and shielding increase, reducing the effective pull of the nucleus on bonding electrons.

Explanation

Kalamandalam Kshemavathy - A celebrated Mohiniattam dancer from Kerala, known for her graceful expressions and significant contributions to popularizing this traditional dance form. Kottakkal Sivaraman - A legendary Kathakali artist famous for portraying female roles (Minukku characters) with exceptional grace and precision in Kerala’s classical dance-drama tradition. Lakshmi Viswanathan - A highly respected Bharatanatyam dancer, teacher, and scholar from Tamil Nadu, renowned for her expertise in abhinaya (expressive dance). N. Madhabi Devi - A distinguished Manipuri classical dancer from Manipur, known for her dedication to preserving and promoting the traditional Ras Lila and other forms of Manipuri dance.

Explanation

The Narasimham Committee (1991 & 1998), chaired by M. Narasimham, was responsible for financial sector reforms in India, including banking liberalization, capital adequacy norms, and strengthening financial institutions. Other Committees: 1. Abid Hussain Committee (1997) Focused on small-scale industries (SSI) reforms. 2. Bhagwati Committee (1973) Related to poverty and public distribution system (PDS) reforms. The committee, officially known as the Task Force on Employment and Income Distribution. 3. Chelliah Committee (1991-93) Recommended tax reforms in India.

Explanation

A is matched with 1: Article 54 provides for the election of the President of India. B is matched with 2: Article 75 has provision for the appointment of the Prime Minister and Council of Ministers. C is matched with 3: Article 155 corresponds to the appointment of the Governor of a State. D is matched with 4: Article 164 provides for the appointment of the Chief Minister and Council of Ministers of a State. Article 170 gives the composition of the Legislative Assembly.

Explanation

Statement 1 is correct: The Representation of the People Act, 1951, under Section 29A, provides for the registration of political parties with the Election Commission of India (ECI).

Statement 2 is correct: The Election Commission of India is responsible for the registration of political parties in India as per the provisions of the Representation of the People Act, 1951.

Statement 3 is correct: The criteria for recognizing a national party includes being recognized in at least four or more states as per the Election Commission’s guidelines. Hence, a party can be considered national if it fulfills certain criteria, which includes recognition in four or more states.

Statement 4 is correct: During the 1999 general elections, there were indeed six national parties and 48 state-level parties recognized by the Election Commission.

Explanation

With respect to year in which this question was asked:

A is matched with 3: The Ministry of Industry is responsible for publishing the Wholesale Price Index (WPI), a vital measure of inflation that tracks the price movement of goods at the wholesale level. B is matched with 4: The Central Statistical Organisation (CSO) publishes the National Accounts Statistics, providing comprehensive data on India’s GDP, economic growth, and macroeconomic indicators. C is matched with 1: The Reserve Bank of India (RBI) releases the Report on Currency and Finance, a detailed analysis of the country’s monetary policy, financial stability, and economic trends. D is matched with 2: The Ministry of Finance publishes the Economic Survey annually, which serves as a review of the country’s economic performance and provides policy suggestions ahead of the Union Budget.

Explanation

The mitochondrion is an organelle in the cell that contains its own DNA. Unlike most of the cell’s DNA, which is found in the nucleus, mitochondria have their own small circular DNA. This mitochondrial DNA (mtDNA) encodes essential proteins involved in energy production through cellular respiration. Mitochondria are often referred to as the "powerhouses of the cell" due to their role in ATP synthesis. Options (a), (b) and (c) are incorrect:

Golgi Apparatus: Membrane-bound organelle; modifies, sorts, and packages proteins and lipids; consists of cisternae; involved in glycoprotein and glycolipid formation. Lysosomes: Membrane-bound vesicles; contain hydrolytic enzymes; digest carbohydrates, proteins, lipids, nucleic acids; play role in intracellular digestion; known as "suicide bags" due to potential self-digestion. Centrioles: Cylindrical structures; composed of microtubules; organize microtubules during cell division; form mitotic spindle; located near nucleus in animal cells; do not contain DNA.

Explanation

Athlete’s Foot, medically known as tinea pedis, is a fungal infection caused by a group of fungi called dermatophytes, which thrive in warm, moist environments like those found in shoes. It primarily affects the skin of the feet, causing itching, redness, and scaling. It is highly contagious and spreads through direct contact or contaminated surfaces. Options (a), (c) and (d) are incorrect:

Bacterial infections are caused by microorganisms like Staphylococcus or Streptococcus. These can lead to conditions like pneumonia, tuberculosis, and food poisoning. Unlike fungal infections, bacterial infections can usually be treated with antibiotics. Protozoans are single-celled organisms that can cause diseases like malaria (caused by Plasmodium), amoebic dysentery (caused by Entamoeba histolytica), and sleeping sickness (caused by Trypanosoma). They are typically transmitted through contaminated water or insect bites. Nematodes, or roundworms, are parasitic worms that can infect humans, causing diseases like ascariasis, filariasis, and hookworm infection. These are usually transmitted through contaminated soil or food.

Explanation

Epiphytes, commonly known as "air plants," are plants that depend on other plants primarily for mechanical support. They grow on the surface of other plants (like trees) to access better light and air circulation, but they do not take nutrients from the host plant. While they do not parasitize the host but they can absorb water and nutrients from rain, dew, and air humidity through specialized structures like spongy roots. Epiphytes are typically found in humid environments and include species like orchids, mosses, and ferns. They do not rely on the host for food or shade, as they can photosynthesize and derive most of their nutrients from the air and rain.

Explanation

The new series of Wholesale Price Index (WPI) was introduced with 1993-94 as the base year, replacing the earlier 1981-82 base year. This revision was done to better reflect the changing structure of the economy and update the weightage of various commodities in the index. The new WPI series became effective from April 1998 and included 697 commodities compared to 447 in the earlier series.