Monkthinker

30 MCQ based on conservation of momentum 1. What is the law of conservation of momentum?     A. Momentum is always increasing     B. Momentum is always decreasing     C. The total momentum of an isolated system remains constant     D. Momentum depends on the frame of reference    Explanation: The correct answer is C. According to the law of conservation of momentum, in an isolated system, the total momentum remains constant. 2. If no external forces act on a system, what can be said about the total momentum of the system?     A. It decreases     B. It increases     C. It remains constant     D. It depends on the masses involved    Explanation: The correct answer is C. In the absence of external forces, the total momentum of a system remains constant. 3. Two objects collide and bounce off each other. What can be said about the total momentum before and after the collision?     A....

Journey through the Digestive System  Hey Guys Digestion and gut health can be a mystery to many people. But the more we know about how our bodies work, the better we can take care of ourselves. The digestive system is one of the most important systems in our bodies, responsible for breaking down food and absorbing nutrients that keep us healthy and energized. But how does it all work? What happens to our food once we swallow it? And how can we take care of our gut health to prevent digestive disorders? In this post, we'll take a deep dive into the mysteries of your stomach and help you understand the intricacies of your digestive system. 1. Introduction: Why understanding digestion and gut health is important Digestion and gut health are two intertwined aspects of our overall well-being that often go overlooked. Yet, they play a crucial role in maintaining our health and vitality. The digestive system is responsible for breaking down the food we consume, extracting ess...

From the Cosmos to Earth: Exploring the Interconnectedness of the Solar System and Ecosystems Have you ever wondered how the solar system and ecosystems on Earth are connected? The universe is full of mysteries, but one thing we do know is that everything is interconnected. The solar system, which is made up of the sun, planets, and other celestial bodies, has a profound effect on the ecosystems on Earth. From the gravitational pull of the moon to the sun's energy, the solar system affects everything from the tides to the climate. In this post, we'll take a deep dive into the interconnectedness of the solar system and ecosystems on Earth.  1. Introduction: The vastness of the cosmos and the beauty of Earth's ecosystems As we gaze up at the night sky, our eyes are filled with wonder and awe at the vastness of the cosmos. With billions of galaxies, each containing billions of stars, it is hard to comprehend the sheer scale of our universe. And yet, amidst this gra...

   1. Which of the following is a characteristic property of alkali metals? a) High ionization energy   b) Low electronegativity   c) Small atomic size   d) Strong tendency to form halides   Answer: b) Low electronegativity Explanation:Alkali metals have low electronegativity, making them highly reactive as they readily lose electrons.  2. What is the general electronic configuration of alkali metals? a) ns²   b) ns¹   c) ns²np³   d) ns¹np⁶   Answer: b) ns¹ Explanation:Alkali metals have a general electronic configuration of ns¹.  3. Which alkali metal is known for forming an alloy with mercury? a) Lithium   b) Sodium   c) Potassium   d) Cesium   Answer: d) Cesium  Explanation: Cesium forms an amalgam with mercury.  4. The most abundant alkali metal in the Earth's crust is: a) Lithium   b) Sodium   c) Potass...