53 questions from the UPSC 2001 examination.
53 questions
The American multinational company, Monsanto has produced an insect-resistant cotton variety that is undergoing field-trials in India. A toxin gene from which ONE of the following bacteria has been transferred to this transgenic cotton?
Assertion (A): Scientists can cut apart and paste together DNA molecules at will, regardless of the source of the molecules. Reason (R): DNA fragments can be manipulated using restriction endonucleases and DNA ligases. Which of the following is correct?
Which of the following distance–time graphs (x–t) represents one-dimensional uniform motion?
Antigen is a substance which
Two wires have their lengths, diameters and resistivities, all in the ratio of 1 : 2. If the resistance of the thinner wire is 10 ohms, the resistance of the thicker wire is
The location of the space organisation units have been marked in the given map as 1, 2, 3 and 4. Match these units with the list given and select the correct answer using the codes given below the Lists: A. ISRO B. IIRS C. NRSA D. SAC
Consider the following statements with reference to the Periodic Table of chemical elements: I. Ionisation potential gradually decreases along a period. II. In a group of elements, electron affinity decreases as the atomic weight increases. III. In a given period, electronegativity decreases as the atomic number increases. Which of these statement(s) is/are correct?
When light waves pass from air to glass, the variables affected are
When water is heated from 0 °C to 10 °C, its volume
A circle of 1 m radius is drawn inside a square as shown in the figure given above. What is the area of the shaded portion in m²?
Most guitarists are bearded males. If A represents all males, B represents bearded males and C represents all male guitarists, then the correct diagram for their relation (shaded portion) is
In the above figure, ABCD is a cyclic quadrilateral, AB = BC and angle BAC = 70°, then angle ADC is
A person travels from X to Y at a speed of 40 kmph and returns by increasing his speed by 50%. What is his average speed for both the trips?
Consider the following organisations: I. Atomic Minerals Directorate for Research and Exploration II. Heavy Water Board III. Indian Rare Earths Limited IV. Uranium Corporation of India Which of these is/are under the Department of Atomic Energy?
A worker reaches his factory 3 minutes late if his speed from his house to the factory is 5 km/hr. If he walks at a speed of 6 km/hr, then he reaches the factory 7 minutes early. The distance of the factory from his house is
The theme of Indian Science Congress, 2001 was
Assertion (A): The boiling point of water decreases as the altitude increases. Reason (R): The atmospheric pressure increases with altitude.
Consider the following statements: I. Tapeworm is a hermaphrodite. II. Round-worm has separate sexes. III. Filaria is caused by a nematode. IV. Guinea worm is an annelid. Which of these are correct?
Match List I with List II and select the correct answer using the codes given below the Lists: List I (Characteristic) I. Zero mass II. Fractional charge III. Fractional spin IV. Integral spin List II (Particle) A) Positron B) Neutrino C) Quark D) Phonon
In 1930, a person’s age was 8 times that of his son. In 1938, the father’s age became ten times that of his son’s age in 1930. The ages of the son and father in 1940 were, respectively.
The range of Agni-II missile is around
Who amongst the following was the Chairman of ISRO when INSAT-3B was launched?
A radioactive substance has a half-life of four months. Three fourth of the substance would decay in
Which organelle in the cell, other than nucleus, contains DNA?
Which one of the following is NOT radioactive?
A conveyer belt delivers baggage at the rate of 3 tons in 5 minutes, and a second conveyer belt delivers baggage at the rate of 1 ton in 2 minutes. How much time will it take to get 33 tons of baggage delivered using both the conveyer belts?
Match List I with List II and select the correct answer using the codes given below the Lists: List I (Substance) I. Ptyalin II. Pepsin III. Renin IV. Oxytocin List II (Physiological role) A) Converts angiotensinogen in blood into angiotensin B) Digests starch C) Digests proteins D) Hydrolyses fats E) Induces contraction of smooth muscles
The cellular and molecular control of programmed cell death is known as
Who is the scientist in whose honour the “Chandra” X-ray telescope has been named?
An aqueous solution of copper sulphate is acidic in nature because the salt undergoes
Epiphytes are plants which depend on other plants for
“Metastasis” is the process by which
Consider the following statements: In a nuclear reactor, self-sustained chain reaction is possible, because I. More neutrons are released in each of the fission reactions. II. The neutrons immediately take part in the fission process. III. The fast neutrons are slowed down by Graphite. IV. Every neutron released in the fission reaction initiates further fission. Which of these statements are correct?
Anand must be a vegetarian because he is a Buddhist. The argument assumes that
Which of the following cell organelles play the most significant role in protein synthesis?
“Athlete’s Foot” is a disease caused by
In an atom, the order of filling up of the orbitals is governed by
A city has a population of 3,00,000 out of which 1,80,000 are males. 50% of the population is literate. If 70% of the males are literate, the number of literate females is
Solve the given equations: x² + y² = 34 x⁴ − y⁴ = 544 The values of x and y are
Assertion (A): A stick is dipped in water in a slanting position. If observed sideways, the stick appears short and bent at the surface of water. Reason (R): The light coming from the stick undergoes scattering from water molecules giving the stick a short and bent appearance.
Consider the following statements: A simple pendulum is set into oscillation. Then I. The acceleration is zero when the bob passes through the mean position. II. In each cycle the bob attains a given velocity twice. III. Both acceleration and velocity of the bob are zero when it reaches its extreme position during its oscillation. IV. The amplitude of oscillation of the simple pendulum decreases with time. Which of these statements are correct?
Match List I with List II and select the correct answer using the codes given below the Lists: List I (Bone) I. Breast-bone II. Collar-bone III. Knee-cap IV. Shoulder blade List II (Name) A) Clavicle B) Patella C) Scapula D) Sternum
Water is filled in a container in such a manner that its volume doubles after every five minutes. If it takes 30 minutes for the container to be full, in how much time will it be one-fourth full?
Match List I with List II and select the correct answer using the codes given below the Lists: List I (Institute) I. Central Institute of Medicinal and Aromatic Plants II. Centre for DNA Finger Printing and Diagnostics III. Institute of Microbial Technology IV. National Institute of Immunology List II (Location) A) Chandigarh B) Hyderabad C) New Delhi D) Lucknow
A man whose blood group is not known meets with a serious accident and needs blood transfusion immediately. Which one of the blood groups mentioned below and readily available in the hospital will be safe for transfusion?
Assertion (A): A piece of copper and a piece of glass are heated to the same temperature. When touched, thereafter, the copper piece appears hotter than the glass piece. Reason (R): The density of copper is more than that of glass.
The mass of a body on Earth is 100 kg (acceleration due to gravity, gₑ = 10 m/s²). If acceleration due to gravity on the Moon = gₑ/6, then the mass of the body on the moon is
In a survey, it was found that 80% of those surveyed owned a car while 60% of those surveyed owned a mobile phone. If 55% owned both a car and a mobile phone, what per cent of those surveyed owned a car or a mobile phone or both?
In the eye donation, which part of the eye is transplanted from the donor?
Which of the following features of DNA makes it uniquely suited to store and transmit genetic information from generation to generation?
Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons?
Match List I with List II and select the correct answer using the codes given below the Lists: List I (Achievement in genetics) I. Discovery of transduction and conjugation in bacteria II. Establishing the sex-linked inheritance III. Isolation of DNA polymerase from E. coli IV. Establishing the complete genetic code List II (Scientists) A) Khurana B) Kornberg C) Lederberg D) Morgan E) Ochoa
Assertion (A): A chemical reaction becomes faster at higher temperatures. Reason (R): At higher temperatures, molecular motion becomes more rapid. Which of the following is correct?