OAVS TGT Science Mock Test - 8 - OTET MCQ

Number of moles = Mass (in grams) / Molar mass.

In benzene each carbon is bonded with other carbon and hydrogen. So, for each carbon there will be two sigma bonds, one with other carbon and another one is with hydrogen. So, now we can calculate the single bonds => 6*2= 12 
And when we come to the no. of pi bonds in each carbon in Benzene there will be one hybridized orbital that will overlap with other carbon axially to form pi bonds. There will be 6 carbons in benzene, so=> 6/2=3 
Hence, we can say there are 3 double bonds in benzene. 

Plants detect light for directional growth movements by sensing changes in light intensity.

Ground water will not be depleted due to:
There are several factors that can help prevent the depletion of ground water. Here is a detailed explanation of why ground water will not be depleted due to the given options:
Afforestation:
- Afforestation refers to the process of planting trees and creating forests in areas where there were none.
- This helps in increasing the overall vegetation cover and contributes to the conservation of ground water.
- Trees play a crucial role in regulating the water cycle by absorbing and releasing water through their roots and leaves.
- The roots of trees also help in improving soil structure, which allows for better water infiltration and reduces surface runoff.
- Therefore, afforestation can help in recharging ground water and preventing its depletion.
Thermal power plants:
- Thermal power plants, which use water for cooling purposes, can have an impact on ground water resources.
- However, the depletion of ground water due to thermal power plants can be minimized through proper water management practices.
- Implementing technologies like closed-loop cooling systems, which minimize water consumption, can help reduce the impact on ground water resources.
- Additionally, recycling and reusing water within the power plant can further reduce the demand for fresh water and minimize depletion.
Loss of forest and decreased rainfall:
- Loss of forest cover and decreased rainfall can have negative effects on ground water resources.
- Forests play a crucial role in capturing and storing rainfall, allowing it to infiltrate into the ground and replenish ground water.
- When forests are lost or rainfall decreases, there is less water available to recharge ground water, leading to its depletion.
- Therefore, the loss of forest cover and decreased rainfall can contribute to the depletion of ground water.
Cropping of high water demanding crops:
- Some crops have high water requirements and can put a strain on ground water resources if not managed properly.
- However, implementing efficient irrigation techniques and water management practices can help minimize the water demand for these crops.
- Techniques like drip irrigation and precision farming can optimize water use and reduce the depletion of ground water.
- Proper crop selection, based on local water availability and suitability, can also help prevent excessive water consumption and depletion of ground water.
In conclusion, ground water can be conserved and its depletion prevented through various measures. Afforestation, proper water management in thermal power plants, conservation of forest cover, increased rainfall, and efficient irrigation techniques can all contribute to the sustainable use of ground water resources.

When acids react with carbonates, such as calcium carbonate (found in chalk, limestone and marble), salt, water and carbon dioxide are made. In general: Acid + Metal carbonate Salt + Water + Carbon dioxide

Binary fission is a kind of asexual reproduction. In binary fission, the fully grown parent cell splits into two halves, producing two pools.

Educating people about gender equality plays a crucial role in combating malpractices like female foeticide. By raising awareness about the value of both male and female lives, society can foster a culture of respect, equality, and empowerment for all individuals, regardless of gender.

Mineral salts absorbed by the roots move laterally from epiblema to xylem through cortex, endodermis, and percycle. Finally, they are transported upwards through xylem along with the transpiration stream.

The chlor-alkali process is primarily aimed at producing sodium hydroxide through the electrolysis of an aqueous solution of sodium chloride. This process is crucial for various industries, including the production of soaps, detergents, and paper.

The space between the lens and the retina is called Vitreous Body and is filled with a transparent gel called Vitreous Humorous.

Excessive burning of fossil fuels generate large amount of harmful gases like CO₂, methane etc. this affect the global warming.

The information coded in DNA (genes) is for only polypeptides (proteins). Insulin hormone is peptide and all enzyme are also proteins.

Protoplasm is a colour less material that has a living part of a cell which includes the cytoplasm, nucleus, and other organelles.
Cytoplasm is a substance which is similar to jelly and is surrounded by the nucleus within the cell membrane.

Abscisic acid inhibits growth in plants.

Factors Affecting Rate of Evaporation

• Wind Speed: Higher wind speeds can increase the rate of evaporation by carrying away the water vapor molecules from the surface, creating a lower concentration of water vapor around the liquid. This allows more water molecules to evaporate.

• Surface Area: A larger surface area can increase the rate of evaporation as more liquid molecules are exposed to the air, allowing for more evaporation to occur.

• Temperature: Higher temperatures can increase the rate of evaporation as the kinetic energy of the liquid molecules increases, leading to more molecules escaping into the air.

• Insoluble Heavy Impurities: Insoluble heavy impurities do not affect the rate of evaporation. These impurities remain in the liquid and do not impact the evaporation process. The rate of evaporation is primarily influenced by factors such as wind speed, surface area, and temperature.

In the primary (growing) plant cell wall, the major carbohydrates are cellulose, hemicellulose and pectin. The cellulose microfibrils are linked via hemicellulosic tethers to form the cellulose-hemicellulose network, which is embedded in the pectin matrix.
 

Calcium (Ca) is the metal present in Calcium Hydroxide (Ca(OH)₂).

Mercury is a thick shining liquid used commonly in glass thermometer. It does not stick with wall and expands uniformly on heating.

Amrita devi bishnoi national award for wildlife conservation has been instituted by government of India because in 1731,women named Amrita Devi sacrificed her life for the protection of khejri trees along with her 363 members of khejrali village near Jodhpur ,Rajasthan.In her memory government of India announced this to the persons who tried to save wildlife or plants and trees.

In our atmosphere , presence of 78 % nitrogen after then presence of oxygen 21 % others 1 %. so the abundant non metal is oxygen

Lanthanides belong to 6th period.They start from atomic number 58 and ends in 71