Day-745
Quiz-summary
0 of 5 questions completed
Questions:
- 1
- 2
- 3
- 4
- 5
Information
DAILY MCQ
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
Results
0 of 5 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 points, (0)
Categories
- Not categorized 0%
- 1
- 2
- 3
- 4
- 5
- Answered
- Review
-
Question 1 of 5
1. Question
1. Consider the following statements about satellite technology:
1. Satellites in geostationary orbit appear to be stationary relative to a fixed point on Earth.
2. The Global Positioning System (GPS) consists of only three satellites to provide accurate location information.
3. Low Earth Orbit (LEO) satellites are typically used for Earth observation and communication due to their proximity to the planet.
How many of the above statements are correct?Correct
Answer: B
Explanation:
Statement 1 is correct. Satellites in geostationary orbit maintain a fixed position relative to a point on the Earth’s surface, as they orbit the Earth at the same rotational speed.
Statement 2 is incorrect. The Global Positioning System (GPS) actually consists of a constellation of at least 24 satellites, which ensures accurate location information by providing multiple signals for triangulation.
Statement 3 is correct. Low Earth Orbit (LEO) satellites are indeed commonly used for Earth observation and communication due to their closer proximity to the Earth, which allows for lower latency and higher-resolution data.Incorrect
Answer: B
Explanation:
Statement 1 is correct. Satellites in geostationary orbit maintain a fixed position relative to a point on the Earth’s surface, as they orbit the Earth at the same rotational speed.
Statement 2 is incorrect. The Global Positioning System (GPS) actually consists of a constellation of at least 24 satellites, which ensures accurate location information by providing multiple signals for triangulation.
Statement 3 is correct. Low Earth Orbit (LEO) satellites are indeed commonly used for Earth observation and communication due to their closer proximity to the Earth, which allows for lower latency and higher-resolution data. -
Question 2 of 5
2. Question
2. Consider the following statements about chronic diseases:
1. Type 2 diabetes is characterized by insulin resistance and is often associated with obesity.
2. Chronic obstructive pulmonary disease (COPD) is primarily caused by viral infections of the lungs.
3. Hypertension is often referred to as the “silent killer” due to its asymptomatic nature in many patients.
How many of the above statements are correct?Correct
Answer: B
Explanation:
Statement 1 is correct. Type 2 diabetes is characterized by insulin resistance, where the body’s cells do not respond effectively to insulin, and it is commonly associated with obesity and a sedentary lifestyle.
Statement 2 is incorrect. Chronic obstructive pulmonary disease (COPD) is primarily caused by long-term exposure to irritants, most commonly cigarette smoke, and not primarily by viral infections, although respiratory infections can exacerbate the condition.
Statement 3 is correct. Hypertension is often referred to as the “silent killer” because it often has no symptoms, making it difficult for individuals to be aware of their condition until serious health complications occur.Incorrect
Answer: B
Explanation:
Statement 1 is correct. Type 2 diabetes is characterized by insulin resistance, where the body’s cells do not respond effectively to insulin, and it is commonly associated with obesity and a sedentary lifestyle.
Statement 2 is incorrect. Chronic obstructive pulmonary disease (COPD) is primarily caused by long-term exposure to irritants, most commonly cigarette smoke, and not primarily by viral infections, although respiratory infections can exacerbate the condition.
Statement 3 is correct. Hypertension is often referred to as the “silent killer” because it often has no symptoms, making it difficult for individuals to be aware of their condition until serious health complications occur. -
Question 3 of 5
3. Question
3. Consider the following statements about recombinant DNA technology:
1. Recombinant DNA technology involves combining DNA from different organisms to produce new genetic combinations.
2. The enzyme reverse transcriptase is used to convert RNA into DNA during the process of cloning.
3. Genetically modified organisms (GMOs) can only be created using bacterial DNA.
How many of the above statements are correct?Correct
Answer: B
Explanation:
Statement 1 is correct. Recombinant DNA technology does involve the combination of DNA from different organisms to create new genetic combinations, which can lead to the production of new traits in organisms.
Statement 2 is correct. Reverse transcriptase is indeed an enzyme that converts RNA into DNA, and it is commonly used in cloning and molecular biology.
Statement 3 is incorrect. Genetically modified organisms (GMOs) can be created using DNA from various sources, not just bacterial DNA. For example, plant and animal DNA can also be used in the creation of GMOs.Incorrect
Answer: B
Explanation:
Statement 1 is correct. Recombinant DNA technology does involve the combination of DNA from different organisms to create new genetic combinations, which can lead to the production of new traits in organisms.
Statement 2 is correct. Reverse transcriptase is indeed an enzyme that converts RNA into DNA, and it is commonly used in cloning and molecular biology.
Statement 3 is incorrect. Genetically modified organisms (GMOs) can be created using DNA from various sources, not just bacterial DNA. For example, plant and animal DNA can also be used in the creation of GMOs. -
Question 4 of 5
4. Question
4. Which of the following statements regarding Artificial Neural Networks (ANNs) is/are correct?
1. ANNs are modeled after the structure of the human brain, with interconnected nodes similar to biological neurons.
2. ANNs can handle only linearly separable problems and require additional models for nonlinear problems.
3. Backpropagation is a commonly used algorithm to train ANNs by minimizing the error through gradient descent.
Which of the given above statements are correct?Correct
Answer: C
Explanation:
Statement 1 is correct: An artificial neural network (ANN) is a computing system that’s modeled after the human brain’s neurons, and is used in artificial intelligence (AI), machine learning (ML), and deep learning.
Statement-2 is incorrect: ANNs are often organized into layers, with each layer containing many nodes that imitate biological neurons. The nodes are interconnected and contain an activation function. ANNs are used in a variety of applications, including autonomous vehicles, which use ANNs to collect data, analyze objects, and make decisions while on the road. ANNs are capable of handling nonlinear problems. Techniques like activation functions (e.g., ReLU, sigmoid) allow ANNs to learn complex, nonlinear relationships.
Statement 3 is correct: Forward propagation and backpropagation are two fundamental processes in the training of Artificial Neural Networks (ANNs). They are used to compute the output of the network and to optimize the model’s parameters (weights and biases) by minimizing the error, respectively.
● Forward propagation is the process by which the input data is passed through the neural network to produce an output. This is the “prediction” phase of the network, where the model takes the input features and computes the output step by step, layer by layer.
● Backpropagation is the process of updating the weights of the neural network based on the error of the prediction. It works by computing the gradients of the error with respect to the network’s weights and biases using the chain rule of calculus and adjusting them to minimize the error. This is the learning phase of the neural network.Incorrect
Answer: C
Explanation:
Statement 1 is correct: An artificial neural network (ANN) is a computing system that’s modeled after the human brain’s neurons, and is used in artificial intelligence (AI), machine learning (ML), and deep learning.
Statement-2 is incorrect: ANNs are often organized into layers, with each layer containing many nodes that imitate biological neurons. The nodes are interconnected and contain an activation function. ANNs are used in a variety of applications, including autonomous vehicles, which use ANNs to collect data, analyze objects, and make decisions while on the road. ANNs are capable of handling nonlinear problems. Techniques like activation functions (e.g., ReLU, sigmoid) allow ANNs to learn complex, nonlinear relationships.
Statement 3 is correct: Forward propagation and backpropagation are two fundamental processes in the training of Artificial Neural Networks (ANNs). They are used to compute the output of the network and to optimize the model’s parameters (weights and biases) by minimizing the error, respectively.
● Forward propagation is the process by which the input data is passed through the neural network to produce an output. This is the “prediction” phase of the network, where the model takes the input features and computes the output step by step, layer by layer.
● Backpropagation is the process of updating the weights of the neural network based on the error of the prediction. It works by computing the gradients of the error with respect to the network’s weights and biases using the chain rule of calculus and adjusting them to minimize the error. This is the learning phase of the neural network. -
Question 5 of 5
5. Question
5. Match the following missiles with their country of origin:
Missiles – Countries of Origin
A. Tomahawk – 1) Israel
B. Barak-8 – 2) United States
C. Fatteh-2 – 3) Iran
D. S-400 – 4) Russia
Select the correct answer using the codes given below:Correct
Answer: C
Explanation: The correct Match is given below-
Missile – Country
• Tomahawk – United States
• Barak-8 – Israel
• Fatteh-2 – Iran
• S-400 – Russia
Tomahawk is a long-range, all-weather cruise missile developed by the United States.
Barak-8 is a surface-to-air missile system developed jointly by India and Israel.
Fatteh-2 is a hypersonic cruise missile developed by Iran. The Fattah-2 has a range of 1,500 kilometers and is powered by hypergolics, which are highly toxic and corrosive. The Fattah-2 can accelerate outside the Earth’s atmosphere but can only steer when inside the atmosphere.
S-400 is a Russian long-range surface-to-air missile system.Incorrect
Answer: C
Explanation: The correct Match is given below-
Missile – Country
• Tomahawk – United States
• Barak-8 – Israel
• Fatteh-2 – Iran
• S-400 – Russia
Tomahawk is a long-range, all-weather cruise missile developed by the United States.
Barak-8 is a surface-to-air missile system developed jointly by India and Israel.
Fatteh-2 is a hypersonic cruise missile developed by Iran. The Fattah-2 has a range of 1,500 kilometers and is powered by hypergolics, which are highly toxic and corrosive. The Fattah-2 can accelerate outside the Earth’s atmosphere but can only steer when inside the atmosphere.
S-400 is a Russian long-range surface-to-air missile system.
