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Chemistry

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Question : Directions: If I denotes ÷, J denotes ×, K denotes − and L denotes +, then what will come in place of (?) in the following equation?
(35 I 5) J 9 K 23 L 39 K (3 J 8) = ?

Option 1: 60

Option 2: 59

Option 3: 51

Option 4: 55

Team Careers360 12th Jan, 2024

Correct Answer: 55


Solution : Given:
I denotes ÷, J denotes ×, K denotes −, and L denotes +
(35 I 5) J 9 K 23 L 39 K (3 J 8) = ?

After replacing the letters with the mathematical signs, we get:
= (35 ÷ 5) × 9

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Question : Comprehension:

In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.

The world is undergoing rapid changes in the knowledge landscape. With various dramatic scientific and technological advances, such as the rise of big data, machine learning, and artificial intelligence, many unskilled jobs worldwide may be taken over by machines, while the need for a skilled workforce, particularly involving mathematics, computer science, and data science, in conjunction with multidisciplinary abilities across the sciences, social sciences, and humanities, (1)________ increasingly in greater demand. With climate change, increasing pollution, and depleting natural resources, there will be a sizeable shift in how we (2)_______ the world's energy, water, food, and sanitation needs, again resulting in the need for new skilled labour, particularly in biology, chemistry, physics, agriculture, climate science, and social science. The growing (3)________ of epidemics and pandemics will also (4)_______ collaborative research in infectious disease management and development of vaccines, and the resultant social issues heighten the need for multidisciplinary learning. There will be a growing (5)__________ for humanities and art as India moves towards becoming a developed country as well as among the three largest economies in the world.

Question:

Select the most appropriate option to fill in the blank number 3.

Option 1: wane

Option 2: dissolution

Option 3: emergence

Option 4: need

Team Careers360 19th Jan, 2024

Correct Answer: emergence


Solution : The third option is the correct choice.

The context of the sentence suggests that there is something growing related to epidemics and pandemics. Emergence fits well in this context, indicating the increasing occurrence or appearance of epidemics and pandemics.

The meanings of the other options

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My class 12 total marks is 62% , mathematics 46, physics 61, chemistry 60 . which branch can I get in jadavpur university if I score 100 in wbjee

Sanjana 19th Jan, 2025

Hello,

With your WBJEE score of 100 and Class 12 marks (62% overall, with Mathematics 46, Physics 61, and Chemistry 60), your chances of getting admission to Jadavpur University (JU) depend on several factors, including:

WBJEE Rank: A WBJEE score of 100 could place you within a rank range of

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Question : What was a major impact of the ethnic conflict in Sri Lanka on the country's development?  
   

Option 1: Increased tourism  
      

Option 2: Enhanced agricultural productivity  
   

Option 3: Prolonged civil war  

  

Option 4: Rapid industrialization  

Team Careers360 20th Jan, 2024

Correct Answer: Prolonged civil war  

  


Solution : A major impact of the ethnic conflict in Sri Lanka was a prolonged civil war, which severely hindered the country's development and led to significant loss of life and resources.

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Question : Comprehension:
Wildlife and nature have largely been associated with humans for numerous emotional and social reasons. A simple stroll around the park amidst some birds provides a fresh breath of life and charges our batteries. Apart from a bird feeder in the backyard, we can also take up other active pastimes, such as hiking, hunting, canoeing, or wildlife photography, to relieve our parched nerves. Since prehistoric times, animals have been highly useful to us in providing food, clothing, and a source of income.
Studies indicate that woodpeckers are capable of destroying 90% of codling moth larvae residing under the bark of trees. This shows the significance of wildlife and wildlife habitat for preserving genetic diversity. Hence, places, where agriculture, forests, and fisheries depend on crops or stocks, can ensure that such living resources are enough to withstand the ever-increasing list of threats. Further, in medicine, the development of new drugs and treatments is largely dependent on wildlife and wildlife habitat. Interestingly, most pharmaceutical products are a result of discovering or developing wildlife species, not discoveries made through traditional chemistry principles. Today, most medicinal remedies contain at least one ingredient derived from a wild plant or animal.
Biodiversity is the variety of living beings within an ecosystem or on our planet. It is a measurement of the health of ecosystems. Biodiversity also plays a part in the function of climate. In terrestrial habitats, tropical areas are rich in species, whereas polar areas support fewer species. The conservation of biodiversity is inevitable for the survival of humans. Based on the passage above, choose the correct option for the following questions:

Question:
What does the passage says about Woodpeckers?

Option 1: Are capable of destroying 90% of codling moth larvae residing under the bark of trees.

Option 2: Make a good muse for wildlife photography.

Option 3: They provide you a fresh breath of air.

Option 4: They like to live in Tropical areas where there is less human population.

Team Careers360 22nd Jan, 2024

Correct Answer: Are capable of destroying 90% of codling moth larvae residing under the bark of trees.


Solution : The first option is the correct choice.

The passage highlights that woodpeckers play a beneficial role by being capable of destroying 90% of codling moth larvae that live under the bark

30 Views

Question : Comprehension:

Read the following passage and answer the questions given after it.

Wetlands are amongst the most productive ecosystems on the Earth and provide many important services to human society. They exhibit enormous diversity according to their genesis, geographical location, water regime and chemistry, dominant species, and soil and sediment characteristics. Globally, the area extent of wetland ecosystems ranges from 917 million hectares (m ha) to more than 1275 m ha. One of the first widely used wetland classification systems, devised by Cowardin et al., 1979, categorised wetlands into marine (coastal wetlands), estuarine (including deltas, tidal marshes, and mangrove swamps), lacustrine (lakes), riverine (along rivers and streams), and palustrine ( marshes, swamps and bogs) based on their hydrological, ecological and geological characteristics.The 

The Ramsar Convention on Wetlands was an international treaty signed in 1971. Overall, 1052 sites in Europe; 289 sites in Asia; 359 sites in Africa; 175 sites in South America; 211 sites in North America; and 79 sites in the Oceania region have been identified as Ramsar sites or wetlands of International importance. As per the Ramsar Convention definition most of the natural water bodies (such as rivers, lakes, coastal lagoons, mangroves, peat land, coral reefs) and man-made wetlands (such as ponds, farm ponds, irrigated fields, sacred groves, salt pans, reservoirs, gravel pits, sewage farms and canals) in India constitute the wetland ecosystem distributed in different geographical regions ranging from Himalayas to Deccan plateau. As of February 2022, India has 49 Ramsar sites covering an area of 10,93,636 hectares, the highest in South Asia. As per the estimates, India has about 757.06 thousand wetlands with a total wetland area of 15.3 m ha, accounting for nearly 4.7% of the total geographical area of the country. Out of this, areas under inland wetlands account for 69%, coastal wetlands 27%, and other wetlands (smaller than 2.25 ha) 4%. Gujarat has the highest proportion (17.5%) and Mizoram has the lowest proportion (0.66%) of the area under wetlands. Among Union Territories, Lakshadweep has the highest proportion (around 96%) and Chandigarh has the lowest proportion (3%) of the geographical area under wetlands.

Question:

In India, what kind of wetlands occupy the largest area?

Option 1: coastal wetlands

Option 2: mangrove swamps

Option 3: inland wetlands

Option 4: small wetlands

Team Careers360 25th Jan, 2024

Correct Answer: inland wetlands


Solution : The correct choice is the first option.

Explanation: In India, inland wetlands occupy the largest area. The passage mentions that as of February 2022, India has about 757.06 thousand wetlands with a total wetland area of 15.3 million hectares. Out of this

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Question : Fill in the blank with the most suitable word.
At that time, I only knew that I adored the way he laughed for no______.

Option 1: just

Option 2: disbelief

Option 3: reason

Option 4: account

Team Careers360 8th Jan, 2024

Correct Answer: reason


Solution : The correct choice is the third option.

The most suitable word to fill in the blank is reason.

In this context, "for no reason" means without a specific cause or explanation. The sentence conveys that the person didn't understand why the laughter occurred; it was

9 Views

Question : The least distance of distinct vision is:

Option 1: 35 cm

Option 2: 25 cm

Option 3: 45 cm

Option 4: 15 cm

Team Careers360 20th Jan, 2024

Correct Answer: 25 cm


Solution : The correct option is 25 cm.

The closest distance at which an object can be brought into focus while still being regarded as a distinct point is referred to as the near point, or the least distance of distinct vision. The smallest distance at

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