Q1. Which of the following statements is correct?
(a) Most of food preparations are colloidal in nature
(b) Most drugs, which are insoluble in water, are administered as colloidal dispersions
(c) Latex is colloidal solution of negatively charged colloidal rubber particles
(d) All of the above
(e) None of the above
Q2. In Bhopal in December 1984, Methyl Isocyanate gas was used in the Union Carbide factory for production of:
(a) Dyes
(b) Detergents
(c) Explosives
(d) Pesticides
(e) None of the above
Q3. Soap bubble looks coloured due to
(a) dispersion
(b) reflection
(c) interference
(d) Any one of these
(e) None of the above
Q4. Rainbow is formed due to
(a) refraction, reflection and dispersion of light through a water droplet
(b) reflection and dispersion oflight through a water droplet
(c) only refraction of light
(d) only dispersion of light
(e) None of the above
Q5. Smooth muscles are likely to be found in
(a) muscles of legs
(b) muscles of arms
(c) stomach
(d) heart
(e) None of the above
Q6. Which one among the following happens when a swing rises to a certain height from its rest position?
(a) Its potential energy decreases while kinetic energy increases
(b) Its kinetic energy decreases while potential energy increases
(c) Both potential and kinetic energy decrease
(d) Both potential and kinetic energy increase
(e) None of the above
Q7. Why is it difficult to measure the coefficient of expansion of a liquid than solid?
(a) Liquids tend to evaporate at all temperatures
(b) Liquids conduct more heat
(c) Liquids expand too much when heated
(d) Their containers also expand when heated
(e) None of the above
Q8. If the distance S covered by a moving car in rectilinear motion with a speed v in time t is given by S = vt, then the car undergoes
(a) a uniform acceleration
(b) a non-uniform acceleration
(c) a uniform velocity
(d) a non-uniform velocity
(e) None of the above
Q9. The symbol of SI unit of inductance is H. It stands for
(a) Holm
(b) Halogen
(c) Henry
(d) Hertz
(e) None of the above
Q10. If a ship moves from freshwater into seawater, it will
(a) sink completely
(b) sink a little bit
(c) rise a little higher
(d) remain unaffected
(e) None of the above
Solutions
S1.Ans. (d)
Sol. Colloids are a mixture in which one substance is divided into minute particles (called colloidal particles) and dispersed throughout a second substance. The substances are present as larger particles than those found in solution, but are too small to be seen with a microscope.
S2.Ans. (d)
Sol. Methyl Isocyanate gas (MIC) is used in preparation of agricultural product pesticide, a posionous substance.
S3.Ans. (c)
Sol. Interference at thin films causes colouring of soap bubble.
S4.Ans. (a)
Sol. Rainbow is formed due to refraction, reflection and dispersion of light through a water droplet.
S5.Ans. (c)
Sol. The smooth muscle fibres taper at both ends (fusiform) and do not show striations. Cell junctions hold them together and they are bundled together in a connective tissue sheath. The wall of internal organs such as the blood vessels, stomach and intestine contain this type of muscle tissue.
S6.Ans. (b)
Sol. As the swing rises, its kinetic energy changes to potential energy; as with height potential energy P.E. = mgh increases. And according to law of conservation of energy total energy E = K.E + P. E constant.
S7.Ans. (d)
Sol. Liquids expand for the same reason, but because the bonds between separate molecules are usually less tight they expand more than solids. This is the principle behind liquid-in-glass thermometers.
S8.Ans. (c)
Sol. As the body moves with a constant speed v along a straight line or rectilinear path hence body undergoes a uniform velocity. Here direction of the moving body is unchanged.
S9.Ans. (c)
Sol. The henry (H) is the Standard International (SI) unit of inductance. Reduced to base SI units, one henry is the equivalent of one kilogram meter squared per second squared per ampere squared (kg m 2 s -2 A -2).
S10.Ans. (c)
Sol. When a body is immersed in a fluid, the fluid exerts an upward force on it, called buoyant force. and buoyant force ∝ density of fluid. As the density of sea water is higher than that of the fresh water. So extra buoyant force and ship will rise a little higher.
General-Studies Quiz For FCI Phase I 202...
