50 Science GK Questions For AFCAT, CDS, NDA, T.A. Exam

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The defense qualifying exams are the best way to begin your journey for the defense career. The exam contains few sections with G.K as a mandatory section. The questions in this section are related to diverse fields from dead GK to the current affairs. The students having good knowledge of their graduation or 10+2 subjects can handle it well. For aspirants, below are some questions from science GK that will give a hint about the type of questions that appear in these exams.

Current Affairs questions will be from last 5-7 months (for AFCAT, NDA, CDS, TA)

50 Science GK Questions For AFCAT, CDS, NDA, T.A. Exam

The power of a lens is measured in – Dioptre
’Anemophily’ pollination is done by – Wind
’Penicillin’ antibiotic is obtained from – Fungi
’Amalgam’ is a term used for an alloy of a metal with –Mercury
Sphygmomanometer is used for measuring – Blood pressure
Decibel is the unit of measuring – Sound
Which bacteria is helpful in making curd from milk – Lactobacillus
the largest flightless bird is – Ostrich
Metal tea pots have wooden handles because – Insulation from heat
Bile is produced in – Liver
elements containing same number of electrons are called – Isoelectronic
Baby Blue Syndrome is caused due to – Nitrate
Richter scale is used for measuring – Seismic waves
Non-stick cooking utensils are coated with – Taflon
Silver gets corroded due to presence of which compound in air– Hydrogen Sulphide
The strongest known natural fibre is – Silk
Silkworm feeds on – Mulberry leaves
Which metal is used in storage batteries – Lead
Which vitamin acts like hormone – vitamin D
Swimming pool seems to be shallower due to the phenomenon of – Refraction of light
Number of bones in a new-born baby is – 300 Bones
Which blood group Is known as universal donor blood group – O blood group
Which of the following caused radioactive pollution along Kerala coast – Thorium
Which lobe of human brain operates hearing process – Temporal
Which of the following disease is caused by Vitamin B3 – Pellagra
Which element gives hardness to stainless steel – Carbon
Addition of suitable impurities into semiconductor elements is called – Doping
ORS is given in – Diarrhoea
Which hormone is secreted by Pancreas – Insulin
The layer of atmosphere closest to the earth crust is – Troposphere
When a sound wave goes from one medium to another, what remains unchanged – Frequency
Plants which grow in saline soil are – Halophytes
Which organ involved in the process of ingestion in the case of Amoeba – Pseudopodia
Bell metal is an alloy of – Tin and Copper
CT scan is done using – X rays
The sea horse belongs to – fishs
Following the sign conventions, the focal length of a concave mirror is – Negative
Alum purifies muddy water by the process of – Coagulation
In vascular plant, water is conducted by – Xylem
Goitre is caused by the deficiency of – Iodine
Beaufort scale is used to measure – Wind speed
The vertical lines of elements in the modern periodic table are called – Groups
The bone of the which organ is the longest in the human body – Thigh
Accumulation of which one of the following in the muscles leads to fatigue – Lactic acid
‘Yellow Cake’ a costly compound, contains – Uranium oxide
Solar energy is produced by – Fusion reaction
Which hormones regulates blood calcium and phosphate? – Parathyroid hormone
Electron was discovered by – J. J. Thomson
Blood and lymph are types of – Connective tissue
The average life span of Human R.B.C is– 120 days

Conclusion – The questions are not only for science students but for all aspirants. What all it required is preparation and practice. The above questions are directly asked and belong to the basics of the science which can be covered easily. Get the conceptual and basic knowledge and go up step by step.