Multiple Choice Question on Basic Concept of Science Class IX Standard Practice Test 2

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This is a mock drill question bank on Basic Concept of Science of Class IX standard for those appearing in different competitive examinations. The question bank consists of 24 questions with clock set for 20 minutes. After you finish the test, press Quiz Finish and you will get the answer sheet, your result and its comparison with others. You will also be given remarks containing the explanation about the answer and also about the distracters (other options) to build confidence on the subject. Always remember that the Mock Drill is to understand how your brain works in handling different pressure and the way distracters are constructed.

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Sr No	Question	Answer	Remarks
2	What is the weight of carbon atom when one mole carbon atoms weighs 12 grams and Avogadro constant is 6.022*1023?	5.018*1022	Avogadro Constant/Weight of one mole of atoms of a substance. Another weight to rule out other distracters is that weight of one carbon atom will be less than weight of one mole.
3	There are three features of every cell of which two are namely nucleus and cytoplasm, What is third one?	plasma membrane
4	Animal tissues are of how many types?	4	Animal tissues are of four types, viz. epithelial tissue, connective tissue, muscular tissue and nervous tissue.
5	Rate of change of velocity determines	acceleration
6	For a uniformly accelerated objects, the distance travelled is proportional to the square of	time	We know S=1/2at*t. This law was derived by Galileo while observing falling bodies.
7	A mass and diameter of a planet is about 1200 and 6 times less as compared to earth, than the gravitational acceleration as compared to earth will be	1/33th times	g=GM/R2 we get gp=GMp/Rp2 and ge=GMe/Re2 and gp/ge=MpRe2/MeRp2 = 36/1000 or gravitational attraction at planet will be 1/33 times that on earth
8	Two stones of mass 5 Kg and 10 Kg are dropped from 100 m height tower touches the ground with what ratio of velocity	1	Velocity gained is dependent only the height and not on mass
9	This is the not the disease which spreads through air	Typhoid
10	Which of the following is not a matter?	cold
11	A saturated solution which	which cannot dissolve more solute	It is solute dissolved in solvent and the stage beyond which no more solute can be dissolved is called saturated solution.
12	Metalloid are elements which are	combination of metal and oxygen	The elements which show intermediate properties between those of metals and non-metals are called metalloids such as boron, silicon, germanium etc.
13	What the mass of four moles of Aluminium when its atomic mass is 27?	108	4*27=108 gram
14	Hypotonic solution is the one of which water concentration is	higher water concentration than cell	There are three type of solutions namely hypotonic, isotonic and hypertonic where the water concentration in the solution is higher, same and lower as compared to that of inside the cell. The water is exchanged through the process of osmosis. For gases, the diffusion process is used for exchange of gases.
15	Chromosomes are made up of	DNA and Protein
16	The area of the curve with velocity and time taken on the axis describes the	distance travelled	Area is multiplication of v=d/t and t; thus giving the distance travelled.
17	A person travelling on a high speed boat will move outwardly when it takes a sudden turn is due to	inertia	The body will fall outwardly because of its tendency to move straight instead moving on the path of the boat which changed suddenly.
18	Pressure exerted by any solid, liquid or gas is	directly proportional to force and inversely proportional to the area of crossection	Pressure is given as F/A; for nails area is less so that it can pierce into the body
19	Two stones of mass 5 Kg and 10 Kg are dropped from 100 m height tower touches the ground with what ratio of kinetic energy	2	The velocity gained is same by the stone having two times mass will gain double the kinetic energy
20	Microbes causing AIDS is not spread by	mosquito bite causing transmitting virus through blood
21	LPG stands for	Liquefied petroleum gas	It is a petroleum gas compressed to liquid state. When knob of the cylinder is opened, it evaporates and starts flowing through tube and used for burning
22	A suspension solution is called	heterogeneous mixture	Suspension is a heterogeneous solution in which the solute does not dissolve but remain suspended in the solvent and is visible with naked eye.
23	A combination of elements showing the properties of each of the constituent is called	mixture
24	The distribution of electrons as given in Bohr’s model in different orbits is given by the formula	2n2	Electrons revolves in orbits with first orbit named as K and than L, M, N etc with numbering n as 1,2,3,4 etc. and number of electrons is 2,8,18,32 etc. with maximum minimum 8 number of electronics in the outermost orbit except number 1.

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