Q201. Why does the liquid in a thermos flask stay hot/cold for a long time?
A No transmission B Convection and no radiation C (a) and (b) D None of these
Show answer Show note
Correct answer: (a) and (b)
Concept note
Q202. In which substance is calcium found?
A China clay B Corundum C Gypsum D Talc
Show answer Show note
Correct answer: Gypsum
Concept note
Q203. Which one is incorrectly matched?
A Desalination — Seawater B Reverse osmosis — drinking water C De-Naturalization — protein D Pasteurization — tea
Show answer Show note
Correct answer: Pasteurization — tea
Concept note
Q204. Which of the following is a herbicide?
A Sodium chlorate B Potassium permanganate (KMnO₄) C Bleaching powder D None
Show answer Show note
Correct answer: Sodium chlorate
Concept note
Q205. Which gas is emitted in paddy fields which increases the temperature of the earth?
A nitrogen B Carbon dioxide C Carbon Monoxide D Methane
Show answer Show note
Correct answer: Methane
Concept note
Q206. Match List-I with List-II and select the correct answer from the codes given below: Index-I List–II A. Kevlar (Kevlar) 1. explosive B. Taxol (Taxol) 2. Synthetic Fiber C. Zinc Phosphide 3. Anti-cancer drug D. Nitrocellulose 4. Rodenticide Codes: A B C D
A 2 4 3 1 B 2 3 4 1 C 4 3 1 2 D 3 1 2 4
Show answer Show note
Correct answer: 2 3 4 1
Concept note
Q207. Objects such as camphor, naphthalene or dry ice disappear when placed in the air. What is it called?
A Sublimation B vaporization C expansion D radiation
Show answer Show note
Correct answer: Sublimation
Concept note
Q208. Arrange the following substances in chronological order of first synthesis in the laboratory: 1.Black Gold 2.Fullerene 3.Graphene 4.Kvalar Choose the correct answer from the codes given below
A 1 2 3 4 B 4 2 3 1 C 2 4 3 1 D 4 1 2 3
Show answer Show note
Correct answer: 4 2 3 1
Concept note
Q209. Nitrogen fixing bacteria form a symbiotic relationship with the roots of which plant?
A Pulses B paddy C wheat D sugar-cane
Show answer Show note
Correct answer: Pulses
Concept note
Q210. What are the medicinal properties of Tulsi?
A Inorganic acids B Organic acids C Phenols and flavonoids D None of these
Show answer Show note
Correct answer: Phenols and flavonoids
Concept note
Q211. Which organism has white blood?
A Lizard B Cockroach C Bedbugs D Mosquitoes
Show answer Show note
Correct answer: Cockroach
Concept note
Q212. Which of the following is not a protein?
A Cotton B Hair C Spider fiber D hoof
Show answer Show note
Correct answer: Cotton
Concept note
Q213. Which gland in the human body is both endocrine and exocrine?
A Adrenal B Lacrimal C pancreas D Thyroid
Show answer Show note
Correct answer: pancreas
Concept note
Q214. Who is not included in NFHS–5?
A High blood pressure B diabete C HIV Tests D Death registration
Show answer Show note
Correct answer: HIV Tests
Concept note
Q215. What is Bibliometry?
A Library network B Information Management Service C Information management tools D Library Service
Show answer Show note
Correct answer: Information management tools
Concept note
Q216. Which of the statements are correct regarding Deep Carbon Observatory (DCO)? 1. It is a global program to understand the role of carbon on Earth. 2. It directly studies geological microbial ecology. Code
A 1 B 2 C 1 and 2 D there is nobody
Show answer Show note
Correct answer: 1 and 2
Concept note
Q217. Which of the following statements is correct about Ecosystem?
A Primary consumers are the least dependent on producers. B Primary consumers outnumber producers in number. C The number of producers is more than the primary consumers. D Secondary consumers are the largest and most powerful.
Show answer Show note
Correct answer: The number of producers is more than the primary consumers.
Concept note
Q218. Which of the statements regarding Eutrophication are correct? 1. It is the process of nutrient excess in the reservoir. 2. It reduces the oxygen level dissolved in water. Code
A Only 1 B Only 2 C Both 1 and2 D there is nobody
Show answer Show note
Correct answer: Both 1 and2
Concept note
Q219. What is the environment altered by human activities called?
A Natural environment B Anthropogenic environment C Urban environment D Modern Environment
Show answer Show note
Correct answer: Anthropogenic environment
Concept note
Q220. Which statement is not correct?
A Species diversity moves from the equator towards the poles. B More species are found in the tropics than in temperate regions. C The Amazon rainforest is the most biodiverse area in the world. D Biodiversity decreases from temperate regions towards the poles.
Show answer Show note
Correct answer: Species diversity moves from the equator towards the poles.
Concept note