Grand test 2 Part 2

The coldest region of the atmosphere(a) Troposphere(b) Thermosphere(c) Stratosphere(d) MesosphereAnswer: dVideo Explanation 22.Regular use of which of the following fertilizers increases the acidity of soil?(a) Potassium nitrate(b) Superphosphate of lime(c) Ammonium…

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Grand test 2 Part 1

Which of the following atoms or ions has the electronic configuration 1s22s22p63s23p6 ?(a) Ne(b) Al3+(c) Cl-(d) Mg2+Answer: cExplanationThe Chlorine (17) electron configuration will be 1s22s22p63s23p5. The chloride ion (Cl-), on the other hand, has an additional electron…

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Grand test 1 Part 2

Gluconeogenesis involves the______. (PPSC 2021)?(a) synthesis of glycogen from glucose(b) breakdown of glycogen to form glucose(c) breakdown of glucose to produce pyruvate(d) None of the theseAnswer: dExplanationGluconeogenesis is the pathway by…

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Grand test 1 Part 1

Which of the following molecules does not have a dipole moment? (PPSC 2015)?(a) CCl4(b) CH2Cl2(c) CHCl3(d) CH3ClAnswer: aVideo Explanation Which of the following compounds has an ionic bond?(a) H2O(b) NH4Cl(c) CH3Li(d)…

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Electrochimstry

Which of the following element act as an inert electrode a) Cu b) Agc) Ptd) None Answer: C Explanation usually platinum works as inert electrode. Inert electrode means the electrode which doesn't participate…

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Mock Part 4

The maximum number of electrons which can be present in a subshell can be represented by(a) 2l + 1(b) 2n2(c) 4l + 2(d) 4l – 2Answer: (c)ExplanationMaximum number of electrons present…

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Mock Part 3

Select the correct statement from the following option.(a) Conjugate effect is stronger than (-I) effect(b) Conjugate effect is weaker than (-I) effect(c) Conjugate effect is same as (-I) effect(d) None of…

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Mock Part 2

Which of the following is not the application of gel filtration? (PPSC 2021)(a) Purification(b) Relative molecular mass determination(c) Protein concentration(d) None of theseAnswer: (d) Which solvent is usually used for SEC…

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Mock Part 1

Which of the following elements is the most electropositive??(a) B(b) C(c) Cl(d) NAnswer: (a)Explanation“Electropositivity can be defined as the tendency of an atom to donate electrons and form positively charged cations.”…

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