Doubtly
@Doubtly · Joined Feb 2021
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- The sequence that controls the copy number of the linked DNA in the vector, is termed a) d) Ori site Explaination:: Origin of replication (ori): This is a sequence from where replication starts and any piece of DNA when linked to... 1
- Match the following columns and select the correct option Column I Column II (a) Placenta (i) Androgens (b) Zona pellucida (ii) Human Chorionic 3}(a)→(ii),(b)→(iii),(c)→(iv),(d)→(i) Explaination:: (a) Placenta also acts as an endocrine tissue and produces several hormones like human... 1
- Presence of which of the following conditions in urine are indicative of Diabetes Mellitus ? a) Ketonuria and Glycosuria b) Renal calculi and Hyperglycaemia a) Ketonuria and Glycosuria Explaination:: Diabetes mellitus leads to a complex disorder called prolonged hyperglycemia, which is associated... 1
- 5. Choose the correct option. A. The unstable isotope of hydrogen is ..... a. H-1 b. H-2 c. H-3 d. H-4 1) The unstable isotope of hydrogen is ….. a. H-1 b. H-2 c. H-3 d. H-4 Answer: c. H-3 2)Identify the odd one. a. Rb b. Ra c. Sr d. Be Answer... 1
- Name the following A. Alkali metal with smallest atom. 1)Alkali metal with smallest atom. Answer: Lithium (Li) 2) The most abundant element in the universe. Answer: Hydrogen (H) 3)Radioactive alk... 1
- Name the isotopes of hydrogen. Write their atomic composition schematically and explain which of these is radioactive ? Hydrogen has three isotopes i.e., hydrogen ( ₁¹ H) , deuterium ( ₁² H) and tritium ( ₁³ H) with mass numbers 1, 2 and 3 respectively. They a... 1
- A 50% solution of sulphuric acid is subjected to electrolyte oxidation and the product is hydrolysed See below image 2
- CO2 is passed into concentrated solution of NaCl, which is saturated with NH3 . ceunderset(Ammonia)2NH3_((aq))+H2O_((l)) + CO2_((g))->undersetAmmonium carbonate(NH4)2CO3_((aq)) ceundersetAmmonium carbonate(NH4)2CO3_((aq)... 1
- Lithium floats an water while sodium floats and catches fire when put in water. When lithium and sodium react with water, hydrogen gas is released. Due to these hydrogen gas bubbles, lithium and sodium floats on water. e... 2
- BeCl2 is covalent while MgCl2 is ionic. Be²⁺ ion has very small ionic size and therefore, it has very high charge density. Due to this, it has high tendency to distort the electron... 1
- Sodium dissolves in liquid ammonia to form a solution which shows electrical conductivity Sodium dissolves in liquid ammonia giving deep blue coloured solutions which is electrically conducting in nature. Na + (x + y) NH₃ → [Na(NH... 1
- Alkaline earth metals have low values of electronegativity; which decrease down the group Electronegativity represents attractive force exerted by the nucleus on shared electrons.The general outer electronic configuration of alkal... 2
- Standard reduction potential of alkali metals have high negative values. The general outer electronic configuration of alkali metals is ns¹. They readily lose one valence shell electron to achieve stable noble gas... 1
- Hydrogen shows similarity with alkali metals as well as halogens. Electronic configuration of hydrogen is 1s¹ which is similar to the outer electronic configuration of alkali metals of group 1 i.e., ns¹.How... 1
- ias exam paper pdf download 2019 Download now set D https://jatinverma.org/wp-content/uploads/2019/06/Question-Paper-UPSC-Prelims-2019-D.pdf 1
- Why is binomial nomenclature important? Binomial nomenclature is important because: The binomials are simple, meaningful and precise. They are standard since they do not change fro... 1
- What will be the shape of bacillus and coccus type of bacteria? The shape of bacillus type of bacteria is rod-shaped and coccus is spherical. 1
- What are the salient features of monera? Salient features of Kingdom Monera: Size: The organisms included in this kingdom are microscopic, unicellular and prokaryotic. Occurrence: T... 2