NEET Model Questions
Ques
A scooter going toward east at 10 ms – 1 turns right through an angle of 90°. If the speed of the scooter remains unchanged in taking this turn, the change in the velocity of the scooter is:
a) 10.0 ms – 1 in southern direction
b) Zero
c) 20.0 ms – 1 in south – western direction
d) 14.14 ms – 1 in south – western direction
Ques
A ball is released from the top of a tower of height h metres. It takes T seconds to reach the ground. What is the position of the ball in T/3 seconds?
a) 8h/9 metres from the ground
b) H/9 metres from the ground
c) 7h/9 metres from the ground
d) 17h/18 metres from the ground
Ques
A particle moving with uniform acceleration has velocity 6 m/s at a distance of 5 m from the initial position. After moving another 7 m, the velocity becomes 8 m/sec. The initial velocity and acceleration of the particle are
a) 4m/s,4m/s2
b) 4m/s,2m/s2
c) 2m/s,4m/s2
d) 6m/s,1m/s2
Ques
The numerical value of the ratio of displacement to dis- tance is:
a) Always equal to one
b) Equal to or less than one
c) Always less than one
d) Always more than one
Ques
Two cars A and B are travelling in the same direction with velocities VA and VB (VA > VB). When the car A is at a distance s behind the car B, the driver of the car A applies the brakes producing a uniform retardation a; there will be no collision when:
a) s≤(VA−VB)2 2a
b) s = (VA−VB)2
c) s <
d) s≥(VA−VB)2
Ques
A ball is dropped from a high rise platform at t = 0 starting from rest. After 6 seconds another ball is thrown downwards from the same platform with a speed v. The twoballsmeetatt=18s. Whatisthevalueofv? (Take g= 10 m/s2 )
a) 75 m/s
b) 40 m/s
c) 55 m/s
d) 60 m/s
Ques
The most stable cation among the following is:
a) Only a
b) Only d
c) Only c
d) Only b
Ques
Among the following compounds, the strongest acid is:
a) C H
b) CH OH
c) C H
d)
Ques
The most reactive nucleophile among the following is:
a) 
b) 
c) 
d) 
Ques
Assertion (A): Carbon – oxygen bonds are of equal length in carbonate ion.
Reason (R): Bond length decreases with the multiplicity of bond between two atoms.
a) Both A and R are true and R is the correct explanation of A.
b) Both A and R are true but R is not the correct explanation of A.
c) A is true but R is false.
d) A is false but R is true.
Ques
The species that attacks benzene in following is:
a) Cl
b) AlCl
c) Cl
d)
Ques
Arrange the following in decreasing order of S 2 reaction:
a) S > P > R > Q
b) S > R > P > Q
c) R > S > Q > P
d) S > R > Q > P
Ques
DNA gyrase, the enzymes that participates in the process of DNA replication is a type of?
a) DNA ligase
b) DNA polymerase
c) DNA topoisomerase
d) Reverse transcriptase
Ques
Which of the following is an enzyme used to form a phosphodiester bond in link between a 3’ end of one DNA chain and 5’ end of another?
a) DNA ligase
b) DNA polymerase
c) Phosphodiesterase
d) Restriction endonuclease
Ques
If one strand of DNA has the nucleotide sequence 5’ GATCAA 3’, its complementary strand will have the sequence?
a) 5’ CTAGTT 3’
b) 5’ TTCATC 5’
c) 5’ TTGATC 3’
d) 5’ TTGTTC 3’
Ques
DNA duplication takes place during?
a) Only in S phage
b) Only in G1 phage
c) Only in G2 phage
d) Cell division phage
Ques
Nucleic acid can be fragmented by the enzyme?
a) Ligase
b) Protease
c) Nuclease
d) Polymerase
Ques
Which one of the following is the starter codon?
a) UAA
b) UAG
c) AUG
d) UGA
Ques
DNA fingerprint method is very useful for?
a) DNA test for identify and relationships
b) Forensic studies
c) Polymorphism
d) All of the above