Objective type questions in written exam test of Extjs4
1 → Questins : During photosynthesis, oxygen is liberated because,
Option a> : It is present in chloroplast
Option b> : It is by product of photosynthesis
Option c> : It is needed by all living things
Option d> : It is necessary for photosynthesis
2 → Questins : While working in kitchen, Nita spilt a cup of water in the salt jar, and Sona dropped a glass of water in pan filled with all which of the following method should they use to get the things right. 1. Strainer 2. Separating Funnel 3. Distillation 4. Evaporation. If N is for Nita, and S for Sona, Tick the correct option.
Option a> : N-1, S-2
Option b> : N-2, S-3
Option c> : N-4, S-2
Option d> : N-3, S-4
3 → Questins : The following table gives the densities of some liquids. 100 grams of these liquids was poured into four different beakers of the same size. The space occupied by each liquid in the beaker is shown below. Identify the liquids in each beaker. [4398.jpg,100]
Option a> : 1-Vegetable oil, 2-Water, 3-petrol, 4-ethyl alcohol.
4 → Questins : Mt. Everest is approximately 9000 meter, above sea level. The atmosphere pressure at its summit would be about.
Option a> : 18 cm of Mercury
Option b> : 23 cm of Mercury
Option c> : 30 cm of Mercury
Option d> : 35 cm of Mercury
5 → Questins : From the above graph we can say that [4395b.jpg,100]
Option a> : Atmospheric pressure increases with increasing altitude
Option b> : atmospheric pressure decreases with increasing altitude
Option c> : altitude has no influence on the atmospheric pressure
Option d> : places at higher altitudes are very cool
6 → Questins : Pressure is inversely proportional to the area of contact. This principle is beautifully demonstrated by the Jacana. The Jacana or lily trotter is a bird capable of walking on floating lily leaves without sinking ! Which of the following feet belongs to the Jacana ?
7 → Questins : Four gas jars are filled with four different gases - hydrogen, Oxygen, Carbondioxide and Nitrogen (See picture attached] Some of their physical and chemical properties are outlined in the table below. Identify the gas in gas jars 1,2,3 and 4 [4393.jpg,300]
8 → Questins : When the bull of a thermometer is covered by a cloth dipped in spirit the thermometer reading
Option a> : increase
Option b> : does not change
Option c> : decreases
Option d> : decreases and then increases
9 → Questins : During on experiment, the boiling point of water was found to be 100.3°C instead of 100°C. Assuming that the thermometer used was not faulty, which of the following is not the right reason ?
Option a> : The atmospheric pressure could be lower than normal.
Option b> : These may be impurities present in water.
Option c> : The atmospheric pressure could be higher than normal.
Option d> : Both B and C
10 → Questins : In which system of the pig does the bladder worm lodge itself ? [592.jpg,300]
Option a> : Muscular system
Option b> : Digestive System
Option c> : Circulatory System
Option d> : Excretory System
11 → Questins : Which one of the graphs indicates that the object is stationary ?
12 → Questins : In which of the following figures is the rod XY likely to remain balanced, if it is initially balanced at its center of gravity ?
13 → Questins : Which one of the following graphs correctly represents the effect of heating on the volume of water ?
14 → Questins : Helium is symbolically represented as42 He. The numbers of neutrons in it is
Option a> : 6
Option b> : 4
Option c> : 2
Option d> : 8
15 → Questins : Study the flow chart carefully and identify the smooth muscle [590.jpg,300]
16 → Questins : Blood is grouped into A, B, AB and O depending on the presence or absence of an antigen. For an antigen the blood also has antibodies. Observer the diagram and answer the question. [591.jpg,200] Identify the location of the antigen / antibody in the blood.
Option a> : On the R.B.C. / In the plasma
Option b> : In the plasma / In the plasma
Option c> : In the plasma / On the R.B.C.
Option d> : On the R.B.C. / On the R.B.C.
17 → Questins : Kinetic Energy of wind is used in
Option a> : sail boat but not in wind mills
Option b> : wind mills but not in sail boat
Option c> : Both in sail boat and wind mills
Option d> : Neither sail boat nor wind mills
18 → Questins : Our body is not crushed by atmosphere pressure since our blood ?
Option a> : exerts pressure which is lesser than the atmospheric pressure
Option b> : exerts pressure equal to atmospheric pressure
Option c> : exerts pressure slightly more than atmospheric pressure
Option d> : does not exert any pressure
19 → Questins : When a fuse is rated 8 Ampere it means
Option a> : It will not work if current is less than 8 Ampere
Option b> : It has resistance 8 ohm
Option c> : It will work only if current is 8 Ampere
Option d> : It will burn if the current exceeds 8 Ampere
20 → Questins : A piece of wood is held under water. The up thrust on it will be
Option a> : equal to weight of wood piece
Option b> : more than weight of wood piece
Option c> : zero
Option d> : less than weight of wood piece
21 → Questins : A toy boat is floating on water in a bucket. If some water is taken from the bucket and poured into the boat the level of water in the bucket.
Option a> : rises
Option b> : goes down
Option c> : remains same
Option d> : first rises and then goes down
22 → Questins : Two bodies of mass M1 and M2 (M1 > M2) are dropped from a height. The ratio of time taken by them to reach the ground is
Option a> : M1/ M2
Option b> : M2 / M1
Option c> : M12 : M22
Option d> : 1:1
23 → Questins : If we put a blackened plate in the sun its temperature
Option a> : will continuously increase
Option b> : will continuously decrease
Option c> : will remain constant
Option d> : will increase for some time and become constant
24 → Questins : A washer man uses a little indigo blue after washing the clothes to
Option a> : give blue colour to clothes
Option b> : to make yellowish tint of clothes white
Option c> : to make them look good
Option d> : to cover the stains on clothes
25 → Questins : The wall of a dam is made thicker at bottom since
Option a> : pressure exerted by a liquid increases with its depths
Option b> : pressure exerted is equal to its depth
Option c> : pressure exerted by liquid decreases with its depth
Option d> : pressure exerted does not depend on depth
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