This question tests knowledge about the circulatory system of different animal groups, specifically focusing on the heart structure of birds. Understanding the evolution of circulatory systems helps in classifying animals and understanding their physiological adaptations.
Correct Option: C) four-chambered heart
This question can be solved by applying Ohm's Law, which describes the relationship between voltage, current, and resistance in an electrical circuit. We need to analyze how current changes when resistance is halved, assuming the voltage remains constant.
where \(V\) is the voltage (in Volts), \(I\) is the current (in Amperes), and \(R\) is the resistance (in Ohms).
Assuming the voltage \(V\) remains constant, the new current \(I_2\) will be:
\[ I_2 = \frac{V}{R_2} \]Simplifying this expression:
\[ I_2 = \frac{2V}{R_1} \]This shows that the new current \(I_2\) is twice the initial current \(I_1\).
Correct Option: B) doubled
When the resistance is halved, and the voltage remains constant, the current flowing through the circuit doubles, according to Ohm's Law.
The question asks to identify the Director General of Doordarshan as of September 2018. This requires knowledge of significant appointments in public broadcasting during that specific period.
As of September 2018, Supriya Sahu, an IAS officer, was indeed serving as the Director General of Doordarshan. She was appointed to this role in June 2017.
A) Supriya Sahu — Supriya Sahu, an Indian Administrative Service (IAS) officer, was appointed as the Director General of Doordarshan in June 2017 and held this position as of September 2018.
The question asks to identify which body part has the 'pinna' as its external part. This requires basic knowledge of human anatomy.
Correct Option: A) ears — The pinna, or auricle, is the visible, external part of the ear that collects sound waves.
To round a number to a specific number of significant figures, we need to identify the significant figures and then apply rounding rules based on the digit immediately following the last significant figure.
A) 0.00859 — The first three significant figures are 8, 5, and 9. The digit following the third significant figure is 4. Since 4 is less than 5, the third significant figure (9) remains unchanged. The leading zeros are not significant figures.
The question asks to identify the sport associated with Anagha Deshpande. This requires general knowledge about prominent Indian sports personalities.
Correct Option: B) Cricket — Anagha Deshpande is a former Indian cricketer who played as a right-handed batter. She has represented the Indian women's cricket team in One Day Internationals (ODIs) and Twenty20 Internationals (T20Is).
A bullet, of mass 40 g is horizontally fired with a velocity 150 ms-1 from a pistol of mass 3 kg. What is the recoil velocity of the pistol?
This problem can be solved using the principle of conservation of linear momentum. In a closed system, the total momentum before an event (like firing a bullet) is equal to the total momentum after the event, provided no external forces act on the system. Here, the system consists of the pistol and the bullet.
The total momentum before firing is equal to the total momentum after firing.
\[ (m_b + m_p) \times v_{\text{initial}} = m_b v_b + m_p v_p \]Since the pistol and bullet are initially at rest, \(v_{\text{initial}} = 0\).
\[ (0.040 \text{ kg} + 3 \text{ kg}) \times 0 \text{ m s}^{-1} = (0.040 \text{ kg} \times 150 \text{ m s}^{-1}) + (3 \text{ kg} \times v_p) \]\[ 0 = (0.040 \times 150) + (3 \times v_p) \]Correct Option: D) 2.0 ms -1
Which of the answer figure is formed from the shapes given in the problem figure?
Problem Figure:
Answer Figures:
The problem figure consists of three shapes: two trapezoids and one triangle. The task is to identify which of the answer figures can be formed using these shapes.
Correct Option: D) Option D correctly uses all the shapes from the problem figure.
The question asks to identify India's fastest and first multi-petaflops (PF) supercomputer, specifically mentioning its unveiling at the Indian Institute of Tropical Meteorology (IITM) in Pune. This requires knowledge of prominent supercomputers in India and their specifications.
Correct Option: A) Pratyush
Pratyush is indeed India's first multi-petaflops supercomputer, unveiled at the Indian Institute of Tropical Meteorology (IITM) in Pune. It was dedicated to the nation in January 2018. With a peak performance of 6.8 Petaflops, it significantly boosted India's capabilities in weather and climate modeling and forecasting. The name "Pratyush" means 'sun' in Sanskrit.
Given below is a statement followed by two assumptions numbered I and II. You have to consider the statement and the following assumptions and decide which of the assumptions is implicit in the statement.
Statement:
The healthiest cooking oil for the whole family an advertisement states.
Assumptions:
I. There are other cooking oils available in the market.
II. The health of the family is the priority for any individual.
Only assumption II is implicit
Only assumption I is implicit
Neither I nor II is implicit
Both I and II are implicit.
This question asks us to identify implicit assumptions in an advertisement statement. An implicit assumption is something that is not directly stated but must be true for the statement to make sense or be logically valid. We need to analyze the given statement and each assumption to see if it is a necessary underlying belief or fact.
Correct Option: D) Both I and II are implicit.