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  VITAMINS   Vitamin was invented by Sir F.G Hopkins. The term vitamin was coined by Funk. Vitamins are organic compound required in minute quantities. No Calorie is obtained from it, but it is very important in regulating chemical reactions in metabolism of the body. On the basis of solubility, vitamins are of two types :- Fat Soluble Vitamins :-  K, E, D, A Water Soluble Vitamins :-  B and C Vitamins and their Chemical name  Vitamins                  Chemical name         A.                                Retinol        B1.                               Thiamine       B2.                              Riboflavin        B3.                         Nicotinamide/Niacin          B5.                         Pantothenic acid       B6.                               Pyridoxine        B7.                               Biotin       B11.                              Folic acid        B12.                       Cynocobalamine        B9.                                 Folic acid         C.       

 1. If sin B = 𝟗/𝟒𝟏 , then what is the value of cot B, where 0° < B < 90° ? (a) 𝟒𝟏/𝟗 (b) 𝟒𝟎/𝟗 (c) 𝟗/𝟒𝟏 (d) 𝟗/𝟒𝟎 2. If cos𝛉 = 9/13, then what is the value of cosec𝜽? (a) 𝟏𝟑/√𝟐𝟐 (b) 𝟏𝟑√𝟐𝟐/𝟒𝟒 (c) 𝟐√𝟐𝟐/𝟏𝟑 (d) √𝟐𝟐/𝟏𝟑 SSC CHSL TIER – I 2022 3. If 𝛉 is an acute angle and sin 𝛉 = 43/47 , what is the value of cos 𝛉?  (a) 43/6√10 (b) 47/6√10 (c) 6√10/43 (d) 6√10/47 SSC CHSL 2023 PRE 4. If 5cosθ=4sinθ,0°≤ 𝜽 ≤ 90° , then what will be the value of  secθ ? (a)41/5 (b)3/5 (c)41/16 (d)41/4 5. If Sin A = 8/1𝟕 , then what is the value of  Cot A + Sec A? यदि Sin A = 𝟖/𝟏𝟕 है, तो Cot A + Sec A का मान क्या है? (a) 4 𝟏/𝟏𝟐𝟎 b) 2 𝟏/𝟏𝟐𝟎 (c) 5 𝟏/𝟏𝟐𝟎 (d) 3 𝟏/𝟏𝟐𝟎 6. If 𝒕𝒂𝒏𝛉 =𝟖/𝟏𝟓, then the value of √𝟏−𝒔𝒊𝒏𝛉/√𝟏+𝒔𝒊𝒏𝛉   is: (a) 1/5 (b) 3/5 (c) 2/5 (d) 4/5 SSC CHSL 2023 PRE 7. If 4cot A = 5, then what is the value of 6 sec A tan A? (a) 𝟐𝟎√𝟒𝟏/𝟐𝟏 (b) 𝟐𝟓√𝟒𝟏/𝟐𝟒 (c) 𝟐𝟒√𝟒𝟏/𝟐𝟓 (d) 3/2  SSC CHSL TIER – I 2022 8. If cos 𝜽 =𝟕/

  DIABETIES :- Diabetes Mellitus is a chronic metabolic disease. which is characterised by hyperglycemia resulting from insulin deficiency or insulin resistance. Diabetic Mellitus SYMPTOMS :- 3P :-  Polyuria (frequent urine)   Polyphagia ( very hungry)  polydipsia ( very thirsty) feeling tired blurry vision weight loss  delay wound healing HYPERGLYCEMIA High blood sugar/ high sugar level in blood. HYPOGLYCEMIA   Low blood sugar with a glucose value of usually less than 70mg/dl CAUSES To high dose of medication ( Insulin/ antidiabetic medication ) Delayed Meals Exercise Alcohol SYMPTOMS Shakiness Anxiety Sweating Irritability or Confusion Fast heart beat Dizziness Hunger and nausea Headaches Weakness Seizure/Unconsciousness TREATMENT Consume simple carbohydrates like half cup sweetened juice, 3 tablespoons of sugar, honey, chocolates or hard candy. Recheck your blood glucose after 15 minutes. If hyperglycemia continues, repeat the glucose supplements. Once blood glucose returns to nor

  HUMAN BRAIN   Brain is a organ of soft nervous tissue contained in the skull of vertebrates, functioning as the coordinating centre of the body. PARTS OF BRAIN Human brain is divided into three major parts on the basis of their functions and placement :-  1. Fore Brain  2. Mid Brain  3. Hind Brain  DIAGRAM OF HUMAN BRAIN 1. FORE BRAIN :-    It is the anterior part of the brain  It has three parts :-  Thalamus Limbic System Cerebrum THALAMUS :- it is located above the brain stem and between the cerebral and Mid-Brain. FUNCTION :- It carries sensory information from the body to cerebrum and the limbic system. HYPOTHALAMUS :- It lies under the thalamus. FUNCTION :- It connects the nervous system with the endocrine system via pituitary gland. LIMBIC SYSTEM :- It is arc shaped structure between thalamus and cerebrum. FUNCTION :- It controls responses like :- Hunger Fear Thirst Anger   Sexual responses etc. CEREBRUM :- It is divided into two halves called cerebral hemisphere. They communi

What is coronavirus ? Coronavirus is a type of virus. it is a largest category for an RNA virus. there are many different kinds, and some cause disease. a coronavirus disease COVID-19 as an infection disease identified in December 2019, caused by SARS-CoV-2 virus, a pandemic of respiratory illness, called COVID-19. SARS-CoV-2 stands for Severe Acute Respiratory Syndrome.   COVID-19 stands for :-  'CO' stands for corona,  ' VI' stands for virus ' D' stands for disease. This disease was referred to as '2019' novel 'coronavirus' or '2019-nCoV'. The coronavirus is a new virus linked to the same family of viruses as SARS and some types of common cold.  Where was COVID-19 first discovered ? The first known infection from SARS-CoV-2 were discovered in Wuhan, China. Who issued the official name of COVID-19 ? The official names of COVID-19 and SARS-CoV-2 were issued by the WHO on 11 February 2020. How does COVID-19 spread between people ? We known

 Cardiac Axis  The average direction of spread of the Depolarization wave through the Ventricles as seen from the front is called "cardiac Axis".                                    Or  Cardiac axis describe the overall direction of electrical spread within the heart. NOTE -   It is usual to decide whether this axis is in a normal direction or not. Lead aVR and lead II look at the heart from opposite directions. when seen from the front, The depolarization wave normally spreads through the ventricles from 11 O 'clock' to 5 O 'clock', so the deflection in lead aVR are normally mainly downward -ve and in lead II mainly upward +ve.  Normal Axis A normal 11 O 'clock - 5 O' clock axis means that the Depolarizing wave is spreading towards lead I, II and III,                  and is therefore associated with a predominantly upward deflection in all these leads. NOTE -   The deflection will be greater in lead II than in lead I and than in lead III.  Right Axis