On 22 July, 2019 India launched successfully its second moon mission Chandrayaan-2 from its most powerful rocket with a plan to land the rover on September 7 in the unexplored lunar south pole, exactly a week after the liftoff was aborted due to a technical sang.
Scientists, using data from Cassini Spacecraft, have fount the evidence of methane rainfall on north pole of Titan, the largest moon of Saturn.
1. The Gas usually filled in the electric bulb is:
- Mixture of Nitrogen and Argon
2. The major component in the LPG is:
3. The most reactive among the halogens is:
4. Milk is an example of:
Every pure substance, either an element or a compound, can be chemically identified by a formulae. The Formula of a compound is a ratio of the number of atoms of each element present in the compound. The molecule of an element may contain one or more atoms of the same element.
A chemical Formula tells us what elements are in a compound and how many atoms of each element are in a molecule of the compound.
Energy Transformation is defined as the process of changing energy from one form to another.
During transformation of energy from one form to another it remains constant. This is known as Law of Conservation of Energy.
Following are the examples of energy transformation : -
What is Energy ?
Energy is a very common word frequently used in our day-to-day life. The universe is made up of matter and energy. In physics, energy is the ability to do work, or the ability to move or elicit change in matter.
In other words, energy measures the capability of an object or system to do work on another object or system.
We require energy for all types of activities including the activities within our body, with our body, or with other bodies. When we say a body has energy, it means it is capable of doing doing work.
1. एक अश्व शक्ति बराबर होता है
- 746 वाट
2. ताप मापने की इकाई है
3. किसी ऊँचाई से पृथ्वी की ओर स्वतंत्रतापूर्वक गिर रही वस्तु एकसमान _________ से गिरती है
4. तैराक को नदी के मुकाबले समुद्री पानी में तैरना आसान क्यों लगता है ?
- समुद्री पानी का घनत्व नदी के पानी से ज्यादा होता है |
5. पृथ्वी से तारों की दूरियों को मापने की इकाई क्या है ?
- प्रकाश वर्ष
The Four Fundamental Forces of Nature are Gravitational Force, Weak Nuclear Force, Electromagnetic Force and Strong Nuclear Force. The Weak Nuclear force and the Strong Nuclear force are effective only over a very short range and dominate only at the levels of sub-atomic particles. Gravity and Electromagnetic force have infinite range. Let's see each of them in detail.