300 questions asked across 18 exam years, newest first
While pouring water slowly from a jug, a general observation is that a water layer usually flows along the side of the jug. Which property of water among the following is responsible for this phenomenon?
Answer: A
Consider the following statements: Statement-I: Marine animals remain alive in winter and move near the bottom of lakes despite frozen water on the surface. Statement-II: The density of water is maximum at 4°C and water at the bottom of lakes remains warm in winter. Which one of the following is correct in respect of the above statements?
Answer: A
Consider the following statements: I. A solution of iodine in ethanol known as ‘tincture of iodine’ is a heterogeneous mixture. II. A suspension is a heterogeneous mixture and its particles scatter a beam of light passing through it, making its path visible. III. A colloidal solution, although it appears homogeneous, is a heterogeneous mixture. Which of the statements given above are correct?
Answer: B
Consider the following statements: I. The leaves of nettle, a herbaceous plant, cause painful stings when touched accidentally because of the secretion of formic acid. II. When gypsum is heated at 100°C, it forms calcium carbonate hemihydrate, called Plaster of Paris. III. When moistened with water, anhydrous copper sulphate forms a green-coloured copper sulphate dihydrate. Which of the statements given above is/are correct?
Answer: A
Consider the following statements in relation to respiration in animals: I. Glucose breaks down into pyruvate in the cytoplasm of all cells in both aerobic and anaerobic conditions. II. The energy released during anaerobic respiration is greater than the energy released in aerobic respiration. III. Carbon dioxide is released only in aerobic respiration. Which of the statements given above is/are correct?
Answer: A
Which of the following cells form components of complex permanent tissue in plants? I. Companion cells II. Sieve tubes III. Tracheids IV. Vessels Select the answer using the code given below:
Answer: A
Which of the following organisms show external fertilization? I. Pigeon II. Frog III. Fish IV. Lizard Select the answer using the code given below:
Answer: B
Which one of the following plant groups is characterized by having a haploid plant body?
Answer: D
Which one of the following organelles is found in both prokaryotic and eukaryotic cells?
Answer: C
Which one of the following is not a connective tissue in the human body?
Answer: A
Which one of the following is not a characteristic of an insect-pollinated plant?
Answer: B
Which one of the following parts of an ovule possesses reserve food?
Answer: D
In which of the following parts of organisms, the process of gaseous exchange during respiration does not take place?
Answer: B
Which part of the plant or flower contributes in the form of false fruit like apple?
Answer: D
Consider the following statements in respect of cell and its structure: I. All cells possess cell wall. II. All cells have ribosomes present inside. III. All cells have well-organized nucleus. IV. All cells have linear DNA molecules present in them. Which of the statements given above is/are correct?
Answer: B
In which cell does the first meiotic cell division take place during the process of spermatogenesis?
Answer: B
Which one of the following tissues in plants is usually without protoplast and regarded as dead cells?
Answer: C
In which one of the following groups of animals, oestrus cycle is not observed?
Answer: B
Which of the following properties of alveoli is/are helpful in gaseous exchange during respiration in human beings? I. The epithelial lining of alveoli is very thin. II. Elastic fibres are present in alveolar wall. III. Wall of alveoli is surrounded by many blood capillaries. Select the correct answer using the code given below.
Answer: D
Consider the following statements: I. Soaps are sodium or potassium salts of long-chain carboxylic acids. II. The properties of catenation and isomerism in the element carbon are attributed to existence of large number of organic compounds than inorganic compounds. III. Carbon dioxide is acidic but carbon monoxide is neutral molecule. Which of the statements given above are correct?
Answer: D
Which of the following statements is/are correct with regard to Nitrolim? I. It is prepared by heating calcium carbide with nitrogen. II. It decomposes into ammonia in soil. III. It is an NPK fertilizer. IV. It is an organic fertilizer. Select the answer using the code given below.
Answer: A
Consider the following statements: I. A colloid and a suspension are heterogeneous mixtures. II. Colloids can be separated from the mixture by the process of centrifugation. III. Particles of colloids and suspensions can be seen by naked eye. IV. The aqueous solution of copper sulphate does not show Tyndall effect; however, the mixture of milk and water shows Tyndall effect. Which of the statements given above is/are correct?
Answer: D
Consider the following critical minerals: I. Neodymium II. Tellurium III. Dysprosium IV. Gallium Which of the above minerals are not used for the production of photovoltaic cells used in solar panels?
Answer: C
