18th January Shift 1 — Bihar SI PYQ

100 Questions • 120 Minutes • PYQ Mock Test in Hindi and English

Sample Questions from this Test

Question 1:

Mark each activity as involving work done or not: (i) A donkey carries a load on its back. (ii) Photosynthesis occurs in a green plant. (iii) A crop is dried in sunlight.
A.(i) Not done; (ii) done; (iii) not done
B.(i) Done; (ii) not done; (iii) done
C.(i) Done; (ii) not done; (iii) not done
D.(i) Not done; (ii) not done; (iii) done

• Key Fact: Mechanical work requires displacement in the direction of the applied force.

• Additional Info: A donkey carrying a load horizontally while the supporting force is vertical does no mechanical work on the load; photosynthesis involves energy conversion rather than mechanical work; drying involves no mechanical work on the material.

• Why the other options are wrong: They misclassify one or more activities.

• Exam Trick: Use W=F s cosθ and check the force-displacement angle.

• Final Answer: (i) Done; (ii) not done; (iii) done.

Question 2:

Assertion: A concave mirror can form both real and virtual images.
Reason: The type of image formed by a concave mirror depends on the position of the object.
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.

• Key Fact: The tested concept is Concave Mirror.

• Additional Info: Remember the defining fact/rule and its common exam association.

• Why the other options are wrong: They refer to different facts or concepts.

• Exam Trick: Link the keyword directly to the defining fact.

• Final Answer: Both A and R are true, and R is the correct explanation of A..

Question 3:

Assertion: A reactive metal can displace a less reactive metal from its compound in solution or molten state.
Reason: Metals are arranged in a reactivity/electrochemical series according to their tendency to lose electrons.
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.

• Key Fact: The question tests Metal Reactivity and Displacement.

• Additional Info: Remember the defining rule/fact for this topic.

• Why the other options are wrong: They do not satisfy the stated condition or refer to a different fact/concept.

• Exam Trick: Identify the exact keyword and apply the relevant rule before looking at the options.

• Final Answer: A is false, but R is true..

Question 4:

Balance aPb(NO3)2→heatbPbO+cNO2+dO2aPb(NO_3)_2 \xrightarrow{heat} bPbO+cNO_2+dO_2 and find a, b, c and d.
A.1,1,2,1
B.1,1,1,2
C.2,2,1,4
D.2,2,4,1

• Balancing: 2Pb(NO3)2→2PbO+4NO2+O22Pb(NO_3)_2 \rightarrow 2PbO + 4NO_2 + O_2.

• Key Fact: All atoms are conserved on both sides.

• Exam Trick: Balance Pb first, then nitrate-derived N/O, then O₂.

• Why the other options are wrong: Their atom counts do not balance.

• Final Answer: 2, 2, 4, 1.

• Additional Info: Revise the connected rule/fact; this helps distinguish the marked answer from the alternatives.

Question 5:

Which of the following is NOT a conclusion of Rutherford’s alpha-particle scattering experiment?
A.Most of the atom is empty space.
B.The positive charge is concentrated in a very small region.
C.Almost the whole mass of the atom is concentrated in a very small volume.
D.The radius of the nucleus is about 10510^5 times the radius of the atom.

• Key Fact: The tested concept is Rutherford Scattering.

• Additional Info: Remember the defining fact/rule and its common exam association.

• Why the other options are wrong: They refer to different facts or concepts.

• Exam Trick: Link the keyword directly to the defining fact.

• Final Answer: The radius of the nucleus is about 10510^5 times the radius of the atom..

Question 6:

Match: a. Tropical evergreen forest; b. Deciduous forest; c. Mangrove forest; d. Mountain forest with (i) Cinchona (ii) Teak (iii) Sundari (iv) Silver fir.
A.a-i, b-ii, c-iii, d-iv
B.a-iv, b-iii, c-ii, d-i
C.a-ii, b-iv, c-i, d-ii
D.a-ii, b-iii, c-iv, d-i

• Key Fact: The question tests Forest Types.

• Additional Info: Remember the defining rule/fact for this topic.

• Why the other options are wrong: They do not satisfy the stated condition or refer to a different fact/concept.

• Exam Trick: Identify the exact keyword and apply the relevant rule before looking at the options.

• Final Answer: a-i, b-ii, c-iii, d-iv.

Question 7:

According to the 2011 Census, the literacy rate of Bihar was:
A.61.8%
B.71.2%
C.51.2%
D.55.3%

• Key Fact: The question tests Bihar Literacy Rate.

• Additional Info: Remember the defining rule/fact for this topic.

• Why the other options are wrong: They do not satisfy the stated condition or refer to a different fact/concept.

• Exam Trick: Identify the exact keyword and apply the relevant rule before looking at the options.

• Final Answer: 61.8%.

Question 8:

Assertion: Rice is a commercial crop in Haryana and Punjab but a subsistence crop in Odisha and Bihar.
Reason: A subsistence crop is mainly grown to meet the needs of the farmer and family, with little surplus for sale.
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.

• Key Fact: The question tests Commercial and Subsistence Crops.

• Additional Info: Remember the defining rule/fact for this topic.

• Why the other options are wrong: They do not satisfy the stated condition or refer to a different fact/concept.

• Exam Trick: Identify the exact keyword and apply the relevant rule before looking at the options.

• Final Answer: Both A and R are true, and R is the correct explanation of A..

Question 9:

Which river does NOT meet the Ganga at Hajipur in Bihar?
A.Gandak
B.Burhi Gandak
C.Kosi
D.Damodar

• Key Fact: The question tests Rivers of Bihar.

• Additional Info: Remember the defining rule/fact for this topic.

• Why the other options are wrong: They do not satisfy the stated condition or refer to a different fact/concept.

• Exam Trick: Identify the exact keyword and apply the relevant rule before looking at the options.

• Final Answer: Gandak.

Question 10:

Which statement about India is incorrect?
A.India ranks eighth in the world in area.
B.The difference between India’s east-west and north-south extent is 281 km.
C.India’s coastline is 15,200 km long.
D.India accounts for about 10.41% of the world’s area.

• Key Fact: The question tests India Physical Geography.

• Additional Info: Remember the defining rule/fact for this topic.

• Why the other options are wrong: They do not satisfy the stated condition or refer to a different fact/concept.

• Exam Trick: Identify the exact keyword and apply the relevant rule before looking at the options.

• Final Answer: The difference between India’s east-west and north-south extent is 281 km..

+ 90 more questions inside...