www.resostart.in Class XI Biology Model Question Paper, 11th Standard

[muthukalee]

Resonance Eduventures Pvt. Ltd.
STaRT-2012
SAMPLE TEST PAPER
CLASS-XI (SC.-BIOLOGY)

A block of mass 2 kg is given an initial velocity of 10m/sec. on a rough horizontal ground. Due to the friction, the block comes to the rest after travelling 5m distance.What should be the constant friction force acting on the block?
(A) 10 N (B) 20 N (C) 30 N (D) 40 N
In the circuit shown, reading of the ammeter and the voltmeter are respectively :
(A) 0.1 amp., 3 volt (B) 0.1 amp., 1 volt (C) 0.3 amp., 3 volt (D) 0.3 amp., 1 volt
A 100 gm bullet is fired in forward direction with a velocity of 100m/sec. Due to this, the free gun of mass 2 kg (excluding bullet) rebounds in backward direction. Total kinetic energy produced in this process is :
(A) 500 J (B) 25 J (C) 525 J (D) 475 J

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A candle is used as an object and placed at a distance of 30 cm from a lens of power 5D (power may be positive or negative).At howmuch distance from the lens, should we place a screen, so that a sharp and inverted image of the candle can be formed :
(A) 30 cm (B) 40 cm (C) 50 cm (D) 60 cm

A motorcycle is moving along the path shown with constant speed 60 km/h. It takes two minutes to move from point P to point Q. The total length of the path from P to Q will be :
(A) 2 km (B) 3 km (C) 4 km (D) 5 km
A cubical block is projected horizontally on a rough surface with speed v and it stops sliding after displacement 'x' when it is projected with speed 2v, displacement of the block before it stops sliding will be :
(A) x (B) 2x (C) 4x (D) 0.5 x
Which of the following lenses would you prefer to use while reading small letters found in a dictionary. lens is kept just above the dictionary ?
(A) Aconvex lens of focal length 50 cm (B) Aconcave lens of focal length 40 cm
(C) Aconvex lens of focal length 5 cm (D)Aconcave lens of focal length 5 cm
The minimum work done to accelerate a block on a smooth horizontal surface from rest to speed v
(A) is less than that required to accelerate if from v to 2v.
(B) is equal than that required to accelerate it from v to 2v.
(C) is more than that required to accelerate it from v to 2v.
(D) may be any one of the above since it depends on the force acting on the truck and the distance over which it acts.
A solution turns red litmus blue, its pH is likely to be :
(A) 1 (B) 4 (C) 7 (D) 10
An atom which has a mass number of 15 and has 7 neutrons is an :
(A) isomer of nitrogen (B) isobar of oxygen (C) isotope of oxygen (D) isobar of carbon
10mL of a solution of NaOH is found to be completely neutralised by 8mL of a given solution of HCl. If we take 20mL of the same solution of NaOH, the amount of H2SO4 solution (having the samemolarity as that of initial HCl solution) required to neutralise it will be :
(A) 4 mL (B) 8 mL (C) 12 mL (D) 16mL
Choose the correct statement with regard to redox displacement reactions.
(A) A less active metal displaces a more active metal.
(B) Amore active non-metal is displaced by a less active non metal.
(C)Aless active non-metal displaces hydrogen from dilute acids.
(D)Amore active metal displaces hydrogen from dilute acids.
Which of the following statements is not a correct statement about the trends when going from left to right across the periods of peridic Table -
(A) The atoms generally become smaller in size.
(B) The number of valence electrons increases.
(C) The atoms lose their electrons more easily.
(D) The oxides becomemore acidic.
3moles of an ideal gas occupices 100L under certain conditions. 1.5moles of the gas is removed and the temperature of the gas is doubled keeping the pressure constant.What is the new volume of the gas ?
(A) 50L (B) 200L (C) 400L (D) 100L
Archaebacteria differ from true bacteria in not having
(A) Mucopeptide substances in cell wall (B) Incipient nucleus
(C) Prokaryotic nature (D) Cell organelles
The bacterial genera carrying out nitritication, nitration, asymbiotic and symbiotic nitrogen fixation are
(A) Rhizobium,Azotobacter, Nitrosomonas, Nitrobacter
(B) Nitrosomonas, Nitrobacter,Azotobacter, Rhizobium
(C) Nitrosomonas, Nitrobcater,Azotobacter, Clostridium
(D) Nitrosomonas, Nitrobacter,Azotobacter, Rhizobium
Nitrogenase occurs in some blue-green algae in its
(A) Akinites (B) Heterocysts (C)Hormogones (D) Endospores
Red tide is caused by
(A) Ceratium (B) Noctiluca (C)Gonyaulax (D) All of these
Deuteromycetes are called fungi imperfecti as they lack
(A) True sexuality (B) Perfect stage (C) Fruiting body (D) All of these
Xylem with vessels is found in which gymnosperms
(A) Cycas and Pinus (B) Ephedra andGnetum
(C)Araucaria and Taxus (D) Thuja and year