p-Block Elements — practice questions
210 curated practice questions from p-Block Elements (Chemistry JEE Main, NTA Exams) — 122 easy, 87 medium, 1 hard. Every question includes the final answer free; step-by-step worked solutions with a free account.
- Identify the wrong example from the following for the group 14 elements.
- Aqueous solution of which of the following boron compounds will be strongly basic in nature? (JEE Main 2022)
- The number of bridged oxygen atoms present in compound B formed from the following reactions is Pb ( NO _ 3 )_ 2 GBFZ A…
- Phosphorus reacts with concentrated HNO 3 to produce
- Which of the following statements is true for the H 3 PO 3 molecule?
- Which one of the following substance is used in the laboratory for fast drying of neutral gases?
- Which of the following statements is correct regarding the behaviour of white phosphorus?
- Diborane reacts with ammonia under different conditions to give a variety of products. Which one among the following is…
- Ionisation enthalpy ( _ i H _ 1 ~kJ ~mol ^ -1 ) for the elements of Group 13 follows the order
- Given below are two statements: Statement I: In group 13, the stability of +1 oxidation state increases down the group…
- Given below are two statements: Statement I: The decrease in first ionization enthalpy from B to Al is much larger than…
- Which of the following elements can have both positive and negative oxidation states?
- Which of the following is not true regarding the nature of halides of boron ?
- Which of the following statements is correct for the iodine molecule?
- Identify the correct statement for B 2 H 6 from those given below. (A) In B 2 H 6 , all B – H bonds are equivalent. (B)…
- Which of the following noble gases is the least polarizable?
- In spite of having lower dissociation energies, bromine and iodine are weaker oxidizing agents than chlorine due to…
- In the presence of water, sulphur is oxidized by ozone to give
- Reaction of thionyl chloride with white phosphorus forms a compound [A], which on hydrolysis gives [B], a dibasic acid…
- Bond dissociation energy of E–H bond of the “ H _ 2 E ” hydrides of group 16 elements (given below), follows order. (A)…
- Which of the following is not true about structure of carbon dioxide ?
- The number of ions from the following that are expected to behave as oxidizing agent is: Sn ^ 4+ , Sn ^ 2+ , Pb ^ 2+ …
- The covalency and oxidation state respectively of boron in [ BF _ 4 ]^ - , are (Jee Main 2023)
- The main factor responsible for weak acidic nature of B—F bonds in BF 3 is:
- Which halogen is known to cause the reaction given below: 2 Cu ^ 2+ +4 X^ - Cu _ 2 X_ 2 (s)+X_ 2 (Jee Main 2023)
- The correct statements from the following are: (A) The decreasing order of atomic radii of group 13 elements is Tl > In…
- Which of the following statements about anhydrous aluminium chloride is correct?
- Which one of the following statements regarding helium is incorrect ?
- Match List I with List II. List Oxide List II Type of bond A. N _ 2 O _ 4 I. 1 N = O bond B. NO _ 2 II. 1 N – O – N…
- The metal that has very low melting point and its periodic position is closer to a metalloid is : (JEE Main 2022)
- Match List-I with List-II, match the gas evolved during each reaction. List-I List-II (A) (NH 4 ) 2 Cr 2 O 7 (I) H 2…
- Among the given oxides of nitrogen; N 2 O, N 2 O 3 , N 2 O 4 and N 2 O 5 , the number of compound/ (s) having N – N…
- When borax is heated with CoO on a platinum loop, blue coloured bead formed is largely due to : (JEE Main 2022)
- An aqueous solution of boric acid is found to be weakly acidic in nature. This acidic character arises due to the…
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A…
- Aluminium is more reactive than iron. But aluminium is less easily corroded than iron because:
- Given below are two statements: Statement I: Group 13 trivalent halides get easily hydrolyzed by water due to their…
- NaBH 4 + I 2 → X + Y + Z BF 3 + NaH 450 ~K X + P BF 3 + LiAlH 4 → X + Q + R X, Y, Z, P, Q and R in the reactions are X…
- Which one of the following is not the characteristic property of carbon ?
- Aluminium exhibits +3 oxidation state. As we move down the group, +1 oxidation state gets more stable. This is a…
- Which of the following oxoacids of sulphur contains “S” in two different oxidation states? (JEE Main 2022)
- Among the following compounds of nitrogen and hydrogen, the most acidic compound is
- Which of the following combines with Fe(II) ions to form a brown complex?
- A metal ‘M’ reacts with sodium hydroxide to give a white precipitate ‘X’ which is soluble in excess of NaOH to give…
- When SO 2 gas is passed into chlorine water, the products formed are
- Which of the following chemical reactions depicts the oxidising behaviour of H 2 SO 4 ?
- Which is not a method of preparing carbon monoxide on a commercial scale ?
- Consider the following reactions, 5 i F _ 4 + ZF ^ - [ 5 i F _ 5 ]^ 2- ZBI _ 3 [ ~W ] Red hat ZB +3 I _ 2 H _ 3 EO _ 3…
- An element of group 14 forms two oxides one of which is highly poisonous and neutral. Other oxide can be easily…
- The reason behind the lower atomic radius of Ga as compared to Al is
- Given below are two statements: Statement I: SbCl _ 5 is more covalent than SbCl _ 3 Statement II: The higher oxides of…
- Which one of the following elements will remain as liquid inside pure boiling water? (Jee Main 2023)
- Identify the incorrect statement related to PCl 5 from the following:
- BF 3 is used as catalyst in several industrial processes due to its:
- Al 2 O 3 formation from aluminium and oxygen involves evolution of a large quantity of heat, which makes aluminium used…
- When aluminium is heated with conc. H 2 SO 4
- Boric acid in solid, whereas BF _ 3 is gas at room temperature because of (Jee Main 2023)
- Which of the following oxides of nitrogen is a mixed anhydride of two acids?
- Which of the following is not true about structure of diamond and graphite ?
- When excesss of carbon dioxide is passed through lime water, the milkiness first formed disappears due to
- A type of zeolite used to convert alcohols directly into gasoline is
- Inert gases have positive electron gain enthalpy. Its correct order is (Jee Main 2023)
- The most stable form of carbon at high temperature is X. The C – C bond length in diamond is Y while C – C bond length…
- Given below are two statements: Statement I: Boron is extremely hard indicating its high lattice energy Statement II…
- Give below are two statements: Statement I: Noble gases have very high boiling points. Statement II: Noble gases are…
- Na _ 2 ~B _ 4 O _ 7 10 H _ 2 O X Y + Z X, Y and Z in the reaction are
- Group 16 elements (except polonium) are called chalcogens because
- Consider the oxides of group 14 elements SiO 2 , GeO 2 , SnO 2 , PbO 2 , CO and GeO. The amphoteric oxides are (Jee…
- Heating white phosphorus with conc. NaOH solution gives mainly: (JEE Main 2022)
- The number of neutrons present in the more abundant isotope of boron is 'x'. Amorphous boron upon heating with air…
- The number of P – O – P bonds in H _ 4 P _ 2 O _ 7 , ( HPO _ 3 )_ 3 , and P_ 4 O_ 10 are respectively (Jee Main 2023)
- Silicon has a strong tendency to form polymers like silicones. The chain length of silicone polymer can be controlled…
- Which one among the following is the most powerful oxidizing agent?
- Choose the correct stability order of group 13 elements in their +1 oxidation state. (JEE Main 2022)
- The gases absorbed by alkaline pyrogallol and oil of cinnamon are respectively
- An oxide X in its normal form is almost non-reactive due to very high X – O bond enthalpy. It resists the attack by…
- Regular use of which of the following fertilizers increase the acidity of soil ?
- For O F_ 2 molecule consider the following: (A) Number of lone pairs on oxygen is 2 . (B) FOF angle is less than 104.5^…
- The correct order of melting points of hydrides of group 16 elements is: (JEE Main 2022)
- Identify the incorrect statements about group 15 elements: (A) Dinitrogen is a diatomic gas which acts like an inert…
- Number of electrons shared in the formation of nitrogen molecule is
- Carbon monoxide acts as a donor and reacts with certain metals to give metal carbonyls. This is due to
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A)…
- In which of the following arrangements, the sequence is not strictly according to the property written against it ?
- Given below are two statements: Statement I: Oxygen being the first member of group 16 exhibits only -2 oxidation…
- What happens when silicon is heated with methyl chloride in presence of copper as a catalyst at 573 K ?
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A…
- Ammonium salts on heating with slaked lime liberates a colourless gas (X). Identify the correct statement for gas (X).
- Given below are two statements: Statement I: SiO _ 2 and GeO _ 2 are acidic while SnO and PbO are amphoteric in nature…
- For compound having the formula GaAlCl _ 4 , the correct option from the following is (Jee Main 2023)
- Sulphur dioxide reacts with chlorine in the presence of charcoal (which acts as a catalyst) to give
- Match List-I with List-II. List-I List-II A. Melting Point [K] A. Melting Point [K] B. Ionic Radius [M +3 /pm] B. Ionic…
- Dinitrogen and dioxygen are the main constituents of air and do not react with each other in atmosphere to form oxides…
- Give below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: The…
- “A” obtained by Ostwald’s method involving air oxidation of NH _ 3 , upon further air oxidation produces “B”. “B” on…
- When a solution of sodium hydroxide is added in excess to the solution of potash alum, we obtain:
- Between which of the following elements is the discontinuity in the ionisation enthalpy values observed?
- Borazole, B 3 N 3 H 6 is related to benzene as:
- During the borax bead test with CuSO _ 4 , a blue green colour of the bead was observed in oxidising flame due to the…
- Which of the following is known as anhydride of nitric acid?
- Element not showing variable oxidation state is: (Jee Main 2024)
- Which of the following does not show similarity between boron and aluminium ?
- Dinitrogen is a robust compound, but reacts at high altitude to form oxides. The oxide of nitrogen that can damage…
- Boron is unable to form BF _ 6 ^ 3- ions due to
- The most stable trihalide of nitrogen is : (JEE Main 2022)
- The decreasing values of bond angles from NH 3 (107 ° ) to SbH 3 (91 ° ) down the group-15 of the periodic table is due…
- Which of the following halogens has only one oxidation state of –1 in an aqeous solution?
- H 2 SO 4 is manufactured from SO 2 (g) by the
- The members of group 14 form tetrahalides of the type MX 4 . Which of the following halides cannot be readily…
- When aluminium hydroxide dissolves in NaOH solution, the product is:
- Boric acid H 3 BO 3 and BF 3 have the same number of electrons. The former is a solid and the latter is a gas. The…
- Which of the following is arranged in order of increasing bond energy?
- Alumina may be converted into anhydrous aluminium chloride by:
- CO 2 is not a poisonous gas but there is increase in concentration of CO 2 in the atmosphere due to burning of fossil…
- Statement I: The electronegativity of group 14 elements from Si to Pb gradually decreases. Statement II: Group 14…
- Indentify the incorrect statement, regarding the molecule XeO 4 .
- Match List-I with List-II List-I (Si-Compounds) List-II (Si-Polymeric / Other Products) (A) (CH 3 ) 4 Si (I) Chain…
- The geometry around boron in the product 'B' formed from the following reaction is BF 3 + NaH 450 ~K A + NaF A + NMe 3…
- The bond dissociation energy is highest for (Jee Main 2023)
- The gas produced by treating an aqueous solution of ammonium chloride with sodium nitrite is (JEE Main 2022)
- Which of the following statements is not appropriate regarding the characteristics of interhalogen compounds?
- Identify the incorrect statement for PCl 5 from the following. (JEE Main 2022)
- A gas 'X' is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate…
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion…
- Among the following, the element that does not show allotropy is
- Boron nitride can be represented by the given structure. The structure of BN is similar to
- Which one of the statements is incorrect for aluminium metal?
- White phosphorus reacts with thionyl chloride to give (JEE Main 2022)
- Which of the following statements is not correct for sulphur?
- Which one of the following statements regarding BF 3 is not correct?
- When alumina is heated with carbon in nitrogen atmosphere, the products are:
- Complete the following reactions : (i) SiO 2 + 2NaOH → X + H 2 O (ii) SiO 2 + 4HF → Y + 2H 2 O (iii) Si +2 CH _ 3 Cl…
- On passing a gas, 'X', through Nessler's reagent, a brown precipitate is obtained. The gas 'X' is (Jee Main 2024)
- When bismuth chloride is poured into a large volume of water the white precipitate produced is of :
- Group 13 elements show +1 and +3 oxidation states. Relative stability of +3 oxidation state may be given as
- From B 2 H 6 , all the following can be prepared except:
- PCl 3 and PCl 5 both exist; NCl 3 exists but NCl 5 does not exist. It is due to
- Identify X in the reaction : X + (steam) 2 H _ 2 O XO _ 2 +2 H _ 2
- White phosphorus reacts with NaOH to give PH 3 and NaH 2 PO 2 . This reaction involves
- Choose the correct statements about the hydrides of group 15 elements. A. The stability of the hydrides decreases in…
- The incorrect statement from the following for borazine is: (Jee Main 2023)
- When SO 2 gas is passed into an acidified solution of K 2 Cr 2 O 7 , the oxidation state of chromium changes
- Which of the Phosphorus oxoacid can create silver mirror from AgNO _ 3 solution? (Jee Main 2023)
- Platinum reacts with aqua regia to produce chloroplatinic acid represented by the formula
- The stability of the hydrides of oxygen, sulphur, selenium and tellurium decreases in the order
- The oxide which contains an odd electron at the nitrogen atom is (JEE Main 2022)
- Given below are two statements: Statement I: Nickel is being used as the catalyst for producing syn gas and edible…
- Standard sodium thiosulphate solution is used in the estimation of iodine present in a solution. The equivalent weight…
- Borazine, also known as inorganic benzene, can be prepared by the reaction of 3-equivalents of "X" with 6-equivalents…
- Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R Assertion A…
- Which of the following compounds is formed when boron trichloride is treated with water?
- On the addition of mineral acid to an aqueous solution of borax, the following compound is formed:
- Match List-I with List-II. List-I (Metal) List-II (Application) (A) Cs (I) High temperature thermometer (B) Ga (II)…
- The power of halides of boron to act as Lewis acids decreases in the order:
- Ozone is prepared by the action of silent electric discharge upon oxygen in an apparatus called ozonizer. The reaction
- Which of the following reactions may be used for the preparation of chlorine?
- Nitrogen gas is obtained by thermal decomposition of (JEE Main 2022)
- In SiO _ 4 ^ 4- , the tetrahedral molecule, two oxygen atoms are shared in
- The oxoacid of phosphorus that is easily obtained from a reaction of alkali and white phosphorus and has two P-H bonds…
- A mixture of boron trichloride and hydrogen is subjected to silent electric discharge to form ‘A’ and HCl. ‘A’ is mixed…
- Consider the following reaction: A + alkali → B (Major Product) If B is an oxoacid of phosphorus with no P–H bond, then…
- The number of OH units directly linked to boron atoms in Na 2 B 4 O 7 .10H 2 O is:
- One mole of P_ 4 reacts with 8 moles of SOCl _ 2 to give 4 moles of A, mole of SO _ 2 and 2 moles of B. A, B and…
- Concentrated HNO 3 reacts with Iodine to give (JEE Main 2022)
- The correct order of acidic nature of N 2 O 5 , SO 2 , CO 2 and CO is:
- The number of hydrogen atom(s) attached to phosphorus atom in hypophosphorous acid is
- The geometry of a complex species can be understood from the knowledge of type of hybridisation of orbitals of central…
- The element which has the highest first ionization energy is
- Which of the following xenon-OXO compounds may not be obtained by hydrolysis of xenon fluorides?
- Specify the coordination geometry around and hybridization of N and B atoms in 1:1 complex of BF 3 and NH 3 :
- Given below are two statements: Statement I: Upon heating a borax bead dipped in cupric sulphate in a luminous flame…
- BCl 3 does not exist as a dimer but BH 3 exists as B 2 H 6 because
- Which of the following does not depict properties of fullerenes ?
- Which of the following properties is not compatible with nitrogen?
- The Lewis acid character of boron tri halides follows the order : (Jee Main 2023)
- Which of the following is used in the preparation of chlorine?
- Given below are two statements: Statement I: The pentavalent oxide of group-15 element, E 2 O 5 , is less acidic than…
- Evaluate the following statements related to group 14 elements for their correctness. (A) Covalent radius decreases…
- Group-13 elements react with O _ 2 in amorphous form to form oxides of type M _ 2 O _ 3 (M = element). Which among the…
- Boric acid has a polymeric layer structure in which planar BO 3 units are joined by
- Choose the correct statements from the following A. All group 16 elements form oxides of general formula EO 2 and EO 3…
- Identify the incorrect pair from the following: (Jee Main 2024)
- Which of the following gases may act both as an oxidizing and a reducing agent?
- Reactivity of borazole is higher than that of benzene because:
- Which of the following compounds is thermodynamically unstable?
- Which of the following compounds is known as inorganic benzene?
- All members of group 14 when heated in oxygen form oxides. Which of the following is the correct trend of oxides ?
- Which element is not present in Nessler's reagent? (Jee Main 2023)
- The tendency of group 14 elements to show +2 oxidation state increases in the order of
- Given below are two statements: Statement I: Chlorine can easily combine with oxygen to from oxides: and the product…
- A solution of sodium in liquid ammonia is blue due to the presence of
- Which of the following noble gases is used for cryogenic works?
- Aluminium chloride in acidified aqueous solution forms an ion having geometry. (Jee Main 2024)
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion…
- White phosphorus is more reactive than N 2 because
- Electropositive charcter for the elements of group 13 follows the order
- When Cl 2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from
- Na _ 2 ~B _ 4 O _ 7 + X H _ 3 BO _ 3 . What is X in the reaction ?
- The interhalogen compound formed from the reaction of bromine with excess of fluorine is a: (JEE Main 2022)
- Dehydration of concentrated H 2 SO 4 in the presence of P 4 O 10 produces
- On reaction of Lead Sulphide with dilute nitric acid which of the following is not formed? (Jee Main 2024)
- H 2 S turns an acidified K 2 Cr 2 O 7 solution
- PCl 5 is well known, but NCl 5 is not. Because, (JEE Main 2022)
- The connect group of halide ions which can be oxidised by oxygen in acidic medium is (Jee Main 2023)
- Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion…
- Concentrated hydrochloric acid when kept in open air sometimes produces a cloud of white fumes. The explanation for it…
- Which oxoacid of phosphorous has the highest number of oxygen atoms present in its chemical formula? (JEE Main 2022)
- In the cyclo-S 8 molecule of rhombic sulphur, all the S—S bond lengths and all the S—S—S bond angles are respectively…
- Cement, the important building material is a mixture of oxides of several elements. Besides calcium, iron and sulphur…
- Which of the following oxoacids of phosphorus is a reducing agent and a monobasic acid as well?