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Fill in the blanks with the correct choi...

Fill in the blanks with the correct choice.
The undesired impurities present in the ores are called `overset((i))("______")` . To remove the volatile impurities from the ore, the `overset((ii))("______")` process is carried ot Flux combines with non-fusible impurities to form `overset((iii))("______")`. CaO acts as a `overset((iv))("______")`flux.

A

gangue `" "` roasting `" "` slag `" "`acidic

B

gangue `" "` calcination `" "`slag `" "`basic

C

anode mud `" "` leaching `" "` matrix `" "`acidic

D

gangue `" "` roasting `" "` solution `" "` acidic

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The correct Answer is:
B
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Fill up the blanks in the following paragraph by selecting the correct option. Human beings have a significant ability to maintain and moderate the respiratory rhythm to suti the demands of the body tissues. This is done by the neural system. A specialised centre present in the medulla region of the brain called overset((i))"_______" is primarily responsible for this regulation. Another centre present in the pons region of the brain called overset((ii))"_______" can moderate the functions of the repiratory rhytm cenre. Neutral signal from this cenre cen reduce the duration of overset((iii))"_______" and thereby alter the respiratory rate. A overset((iv))"_______" is situated adjacent to the rhythm centre which is highly sensitive to CO_(2) and hydrogen ions.

Consider the following statements (A-D) each with one or two blanks. (A) Four characters of chordates are the presence of overset("(i)")"_____" dorsal hollow nervous system, overset("(ii)")"_____" and muscular tail (B) Agnatha are the most primitive craniates. They are commonly called overset("(iii)")"_____" vertebrates (C) Electric ray belongs to class overset("(iv)")"_____" while sea horse belongs to class overset("(v)")"_____" (D) overset("(vi)")"_____" are also defined as feathered bipeds. These have a overset("(vii)")"_____" gland on the tail Which one of the following options, correctly fills any two of the given statements ?

Consider the following statements each with two blanks. (A) Seminiferous tubules produce overset((i))"_____" while Leydig's cells produce overset((ii))"_____" . (B) In females, urethra is small and conducts overset((iii))"_____" while in males it conducts urine and overset((vi))"_____" . (C) The process of formation of spermatozoa form spermatogonia is called overset((v))"_____" and the process of maturation of spermatids into spermatozoa is called overset((vi))"_____" . Which one of the following options, gives the correct fill ups for the respective blanks numbers from (i) to (vi) in the statements?

Fill up the blanks in the following paragraph by selecting the correct option. overset((i))"____" are the primary female sex organs that produce overset((ii))"____" and overset((iii))"____" . Each primary sex organ is about overset((iv))"____" in length and is connected to the pelvic wall and uterus by overset((v))"____"

Consider the following statements A-D with incomplete spaces : A. Although the plant is infected with a virus , the apical and axillary overset((i))("_______") is free of virus. B. Around three billion people in the world suffer from overset((ii))("_______"), overset((iii))("_______") and overset((iv))("_______") , deficiencies or hidden hunger. C. Alternate sources of proteins for animals and human nutrition is overset((v))("_______") like overset((vi))("_______") D. Whole plants could be generated from any part of the plant called overset((vii))("_______") and this capacity is called overset((viii))("_______")

Given below are three statements (A-C) each with one or two blanks. Select the option which correctly fills up the blanks in any two statements A. Diseases or infections which are transmitted through sexual intercourse are collectively called overset("i")"____" deseases B. Gential herpes is overset("ii") "____" disease C. Sterilisation in males is overset("iii")"____" while in females is overset("iv") "____"

Thoracic chamber is formed dorsally by the overset((i))"____" , vertrally by the overset((ii))"____" , laterally by the overset((iii))"____" and on lower side by the dome shaped overset((iv))"____" . Select the correct option to complete the above paragraph.

Consider the following statement each with two blanks. (i) Diaphragm contrects to help in overset((1))"_____" while the contraction of abdominal muscles help in overset((2))"_______" . (ii) Vital capacity of trained atheles is overset((3))"______" than that of non-athletes while the vital capacity of non-smokers is overset((4))"______" than that of smokers. Which of the follwoing options gives the correct fill ups for the respective blanks numbered from (1) to (6) in the above statements ?

Fill up the blanks in the following paragraph by selecting the correct option A. overset("i")("___") methods work on the principle of avoiding chances of ovum and sperms meeting B. overset("ii")("___") is one such method in which the couples avoid coitus from day 10 to 17 of the menstrual cycle C. overset("iii")("___") is another method in which the male partner withdraws his penis from the vagina just before ejaculation so as to avoid insemination D. overset("iv")("___") method is based on the fact that ovulation and therefore the cycle do not occur during the period of intense loctation following parturition.

Consider the following statements each with two blanks. (i) Actually, only about overset((1))"_____" mL of air enters the lungs alveoli for the exchange of gases. The remaining fills the respiratory passage and is termed overset((2))"_____" . (ii) The amount of air which one can inhale with maximum effort and also exhale with maximum effort is termed as overset((3))"_____" . It is about overset((4))"_____" in normal adult person. (iii) During normal quiet breathing, on an average, approximately overset((5))"_____" mL of air is inspired or expired by adult human male in each breath. It is termed as overset((6))"_____" volume. Which of the following options gives the correct fill ups for the respective blanks numbers from (1) to (6) in the above statement ?

NCERT FINGERTIPS ENGLISH-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-Assertion And Reason
  1. Fill in the blanks with the correct choice. The undesired impuritie...

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  2. Assertion : Minerals are naturally occurring chemical substances in t...

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  3. Assertion : In froth floatation method, collectors such as pine oil or...

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  4. Assertion : Gold and silver are extracted from their native ores by le...

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  5. Assertion: Roasting is a process in which the ore is heated in presenc...

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  6. Assertion : Reduction of a metal oxide is easier if the metal formed i...

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  7. Assertion : Sulphide ores are converted to oxides before reduction. R...

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  8. Assertion : Magnesium metal is not used for the reduction of alumina i...

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  9. Assertion : In the metallury of aluminium , purified Al(2)O(3) is mixe...

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  10. Assertion: Limestone addes in the blast furnace decomposes to give CaO...

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  11. Assertion : Tin is refined by liquation method. Reason : Tin has low...

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  12. Assertion : In electrolytic refining of metal, impure metal is made ca...

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  13. Assertion: Zone refining method is used to produce pure metals which a...

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  14. Assertion: Nickel is purified by reaction it with CO. Reason: Impur...

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  15. Assertion : van Arkel method is used for refining of Zinc. Reason :...

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  16. Assertion : Chromatography in general involves a mobile (a gas, a liqu...

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