Q. Which one of the following processes of weathering belongs to both mechanical and chemical weathering?
1) Hydration
2) Exfoliation
3) Crystallisation
4) Carbonation
Q. Which among the following cell organelles is semi-permeable?
1) Cell membrane
2) Plasma membrane
3) Cell wall
4) Nucleus
Q. Which one among the following most correctly determines the atomic number of an element?
1) Number of protons and electrons
2) Number of nucleons
3) Number of ions
4) Number of protons
Q. Which one among the following is used to make periscope?
1) Concave lens
2) Concave mirror
3) Plane mirror
4) None of these
Q. Kilowatt-hour is the unit of
1) electric energy
2) electric power
3) electric potential
4) potential difference
Q. A stable nucleus (light with A < 10) has
1) no protons
2) no neutrons
3) exactly the same number of neutrons and protons
4) more neutrons than protons
Q. The reaction that takes place in soap making is called saponification. Basically soap is sodium or potassium salts of
1) long chain monocarboxylic acids
2) long chain dicarboxylic acids
3) long chain tricarboxylic acids
4) glycerol
Q. The metal constituent of chlorophyll is
1) Potassium
2) Iron
3) Magnesium
4) Manganese
Q. During explosion of gunpowder, which of the following gases are evolved in the proportion of 1:3?
1) Nitrogen : Oxygen
2) Oxygen : Nirtogen
3) Nitrogen : Carbon dioxide
4) Carbon dioxide : Nitrogen
Q. The Supreme Court of India has expanded the meaning of the Right to Life to include the following derivative rights. Which one among the following is not included in the Court's definition?
1) Right to education
2) Right to food and adequate livelihood
3) Right to live in a healthy environment
4) Right to health and information
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