Bihar 69th Prelims Answer Key 2023

In the context of ‘Shipwreck Tourism’, shipwrecks in Indian waters have been explored at Sunchi Reef, Amee Shoals and Grande Island. Where are these locations?

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Q. In the context of ‘Shipwreck Tourism’, shipwrecks in Indian waters have been explored at Sunchi Reef, Amee Shoals and Grande Island. Where are these locations? (A) Off the coast of Goa (B) Off the coast of Lakshadweep (C) Off the coast of Tamil Nadu (D) Off the coast of Odisha Answer: A Since the … Read more

Input and output nerves meet at?

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Q. Input and output nerves meet at? (69th BPSC Prelims 2023) (A) Liver (B) Central nervous system (C) Heart (D) None of the above Answer: D The reflex arc connections between the input and output nerves meet in a bundle in the spinal cord. In fact, nerves from all over the body meet in a … Read more

Which of the following slow down the reaction rate?

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Q. Which of the following slow down the reaction rate? (69th BPSC Prelims 2023) (A) Catalytic promoter (B) Homogenous catalyst (C) Heterogeneous catalyst (D) None of the above Answer: C Homogeneous catalysis because a catalyst is a substance that boosts the rate of a reaction but does not change chemically during the process The reactants … Read more

Current density is?

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27. Current density is? (A) a scalar quantity (B) a vector quantity (C) dimensionless (D) None of the above Answer: B Read more: Must Read Books for Competitive Exams Current density is a vector quantity having both a direction and a scalar magnitude. Current density is referred to as the total amount of current which is … Read more

An AC current can be produced by?

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Q. An AC current can be produced by? (A) Choke coil (B) Dynamo (C) Transformer (D) None of the above Answer: B An alternating current can be produced by a dynamo. Read more: Must Read Books for Competitive Exams

What is the expanded form of the term ‘mRNA’ that has been widely discussed since the beginning of the pandemic?

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Q. What is the expanded form of the term ‘mRNA’ that has been widely discussed since the beginning of the pandemic? (69th BPSC Prelims 2023) (A) Messenger Ribonucleic Acid (B) Mutant Ribonucleic Acid (C) Modified Ribonucleic Acid (D) Mnemonic Ribonucleic Acid Answer: A Messenger RNA (abbreviated mRNA) is a type of single-stranded RNA involved in … Read more

The theory that states “pieces of the Earth’s crust are in constant, slow motion driven by movement in the mantle is called?

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Q. The theory that states “pieces of the Earth’s crust are in constant, slow motion driven by movement in the mantle is called? (A) The theory of continental drift (B) The theory of Pangaea (C) The theory of plate tectonics (D) The theory boundaries of plate Answer: C The geological theory that states that pieces … Read more

The process that continually adds new crust is?

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Q. The process that continually adds new crust is? (A) Subduction (B) Earthquake (C) Seafloor spreading (D) Convection Answer: C Seafloor spreading creates new crust. Subduction destroys old crust. Read more: Must Read Books for Competitive Exams

How do vector vaccines work to provide immunity?

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Q. How do vector vaccines work to provide immunity? (A) By introducing a weakened or inactivated virus into the body (B) By directly attacking and destroying pathogens in the body (C) By placing the virus in a modified version of a different virus (D) By entering directly into the cells and enabling them to create … Read more

How do COVID vaccines stimulate an immune response?

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Q. How do COVID vaccines stimulate an immune response? (A) By introducing live attenuated SARS-CoV-2 virus (B) By introducing a real SARS-CoV-2 virus (C) By introducing a harmless piece of SARS-CoV-2 virus (D) By introducing antibodies against SARS-CoV-2 virus Answer: A To trigger an immune response, many vaccines put a weakened or inactivated germ into … Read more