Marble is a metamorphic rock composed of recrystallized carbonate minerals, most commonly calcite or dolomite. Marble may be foliated. Geologists use the term “marble” to refer to metamorphosed limestone; however, stonemasons use the term more broadly to encompass unmetamorphosed limestone. Marble is commonly used for sculpture and as a building material.
Q2. Which of the following is most important for absorption of heat radiated from the Sun as well as from the Earth?
निम्नलिखित में से सूर्य तथा पृथ्वी से विकरित ऊष्मा के अवशोषण के लिए सबसे आवश्यक क्या है?
Carbon dioxide is a colorless gas with a density about 50% higher than that of dry air. Carbon dioxide is a greenhouse gas, absorbing and emitting infrared radiation at its two infrared-active vibrational frequencies (see the section “Structure and bonding” above). This causes carbon dioxide to warm the surface and lower atmosphere while cooling the upper atmosphere.
Q3. Which among the following has segmented body?
निम्नलिखित में से किसका शरीर सर से पूँछ तक खंडित रहता है?
(a) Phylum Mollusca/ मोल्स्का (चुर्नप्रवार) जाति
(b) Phylum Arthopoda/ संधिपाद जाति
(c) Phylum Annelida/ वलियन जाति
(d) Phylum Coelenterata/ आन्तरगुही (निडेरिया) जाति
Scandinavia is a historical and cultural region in Northern Europe characterized by a common ethnocultural North Germanic heritage and mutually intelligible North Germanic languages. The term Scandinavia always includes the three kingdoms of Denmark, Norway, and Sweden.
Q6. Cattle quickly swallow grass and store it in their __________.
मवेशी घास निगलने के उपरांत उसे_________में संगृहित करते हैं?
The rumen, also known as a paunch, forms the larger part of the reticulorumen, which is the first chamber in the alimentary canal of ruminant animals. It serves as the primary site for microbial fermentation of ingested feed. The smaller part of the reticulorumen is the reticulum, which is fully continuous with the rumen, but differs from it with regard to the texture of its lining.
Q7. Around how much percent of earth’s surface is covered with water?
About 71 percent of the Earth’s surface is water-covered, and the oceans hold about 96.5 percent of all Earth’s water. Water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers.
Q8. The method of soil conservation in which ploughing is done parallel to the contours of a hill slope to form a natural barrier for water to flow down the slop is called?
मृदा संरक्षण की उस विधि को क्या कहते हैं जिसमे पहाड़ी ढाल पर समोच्च रेखाओं के सामानांतर जुटी ढाल से नीचे बहते जल के लिए प्राकृतिक अवरोध का निर्माण करती है?
Contour plowing or contour farming or Contour bunding is the farming practice of plowing and/or planting across a slope following its elevation contour lines. These contour lines create a water break which reduces the formation of rills and gullies during times of heavy water run-off; which is a major cause of soil erosion. The water break also allows more time for the water to settle into the soil.
Q9. In females, the ovaries are located ______ on each side of the lower abdomen.
महिलाओं में, उदर के निचले भाग के दोनों ओर________अंडाशय स्थित होता है |
The formation of soil happens over a very long period of time. There are some factors that aids the process of soil formation. Of those many factors, it is the parent rock of which the soil is made of determines the colour, texture, chemical properties, mineral content and permeability of soil.
Q11. The innermost layer is the core with a radius of about ___________ km.
पृथ्वी की सबसे आतंरिक परत क्रोड की जिसकी त्रिज्या लगभग______किलोमीटर है |
Earth’s core is the very hot, very dense center of our planet. The ball-shaped core lies beneath the cool, brittle crust and the mostly-solid mantle. The core is found about 2,900 kilometers (1,802 miles) below Earth’s surface, and has a radius of about 3,485 kilometers (2,165 miles).
Q12. The__________ are the primary female sex organs that produce the female gamete (ovum) and several steroid hormones (ovarian hormones).
_______स्त्री के प्राथमिक लैंगिक अंग है जो स्त्री युग्मक (अंडाणु/ओवम)और कई स्टेरॉयड हार्मोन (अंडाशयी होर्मोन) का उत्पन्न करते हैं |
The ovary is an ovum-producing reproductive organ, found in double pairs in the female as part of the vertebrate female reproductive system. Birds have only one functional ovary (the left), while the other remains vestigial. Ovaries in females are analogous to testes in males, in that they are both gonads and endocrine glands.