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Consider the following statements: 1. Both ferromagnetic and ferrimagnetic materials have domain structures; each domain has randomly oriented magnetic moments when no external field is applied. 2. Both ferromagnetic and ferrimagnetic materials make those domains that have a favourable orientation to the applied field grow in size. 3. The net magnetic moment in ferromagnetic materials is higher than that in ferrimagnetic materials. 4. The net magnetic moment in ferrimagnetic materials is higher than that in ferromagnetic material. Which of the above statements are correct?
Ferrimagnetic materials have anti parallel orientation of equal moments of permanent dipoles.
Consider the following statements for piezoelectric materials: 1. All piezoelectric materials are ferroelectric materials also. 2. Piezoelectric materials have a high value of dielectric constant. Which of the above statements is/are correct?
Which one of the following are true of authentic materials for language learning? a. Materials should take into consideration the socio-cultural milieu of the region. b. Materials should provide a route map for learner to move on. c. Any materials could be taught in any region.
Consider the following statements regarding corrosion of ceramic material: 1. Ceramic materials are much better suited to withstand most of these environments for reasonable time periods than are metals. 2. Corrosion of ceramic materials generally involves simple chemical dissolution, in contrast to the electrochemical processes found in metals. 3. Ceramic materials are not frequently used because of their non-resistance to corrosion. Which of the above statements is/are correct?
Which of the following support materials in learning use the procedures of programmed Instructional Technology based on Skinner and Crowder's principles? A. Modular instructional material B. Branching programs based on material C. Linear programs based materials D. Specially prepared supplement program materials E. Lecture outlines with components of 'to reflect' and 'to do' Choose the correct answer from the options given below:
In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: State materials are protected due to either of 2 reasons: the classification of information as sensitive, classified or secret, or the relevance of the information to protecting the national interest. B: With respect to governmental information, any government may distinguish which materials are public or protected from disclosure to the public.  C: Such freedom implies the absence of interference from an overreaching state; its preservation may be sought through the constitution or other legal protection and security. D: Freedom of the media is the principle that communication and expression through various media, including printed and electronic media, especially published materials, should be considered a right to be exercised freely. 
The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options. P: But there Is no firm evidence of any valuable mineral that can be extracted from Mars and transported to Earth. Q: Worst, nobody has any idea what undesirable microbes or poisonous materials we will be importing from Mars. R: They are also unrealistic about the cost of transportation that will be involved in the interplanetary movement of men and materials. S: Advocates of space programme argue for spending huge amounts of money on exploring Mars as they believe Mars could be a perennial source of materials for us earthlings.
The erosion mechanism of rubber-like materials is same as that of brittle materials and ductile materials.
Correct answer for the given blank out of the four alternatives.
The main failings were of conception and a political willingness to settle _________ easy options. _______________ the expansive declarationsof the need "to maintain effective security of all nuclear materials, _______________ includes nuclear materials used in nuclear weapons”, thesummits narrowed their _______________ to civilian holdings __________________ non­nuclear weapon states.
_______________ includes nuclear materials used in nuclear weapons”